diff --git a/Moose Development/Moose/Ops/Airboss.lua b/Moose Development/Moose/Ops/Airboss.lua
index e9655c499..755c02f81 100644
--- a/Moose Development/Moose/Ops/Airboss.lua	
+++ b/Moose Development/Moose/Ops/Airboss.lua	
@@ -152,16 +152,12 @@
 -- @field #boolean ICLSon Automatic ICLS is activated.
 -- @field #number ICLSchannel ICLS channel.
 -- @field #string ICLSmorse ICLS morse code, e.g. "STN".
--- @field #AIRBOSS.Radio PilotRadio Radio for Pilot calls.
 -- @field #AIRBOSS.Radio LSORadio Radio for LSO calls.
 -- @field #number LSOFreq LSO radio frequency in MHz.
 -- @field #string LSOModu LSO radio modulation "AM" or "FM".
 -- @field #AIRBOSS.Radio MarshalRadio Radio for carrier calls.
 -- @field #number MarshalFreq Marshal radio frequency in MHz.
 -- @field #string MarshalModu Marshal radio modulation "AM" or "FM".
--- @field #AIRBOSS.Radio AirbossRadio Radio for carrier calls.
--- @field #number AirbossFreq Airboss radio frequency in MHz.
--- @field #string AirbossModu Airboss radio modulation "AM" or "FM".
 -- @field #number TowerFreq Tower radio frequency in MHz.
 -- @field Core.Scheduler#SCHEDULER radiotimer Radio queue scheduler.
 -- @field Core.Zone#ZONE_UNIT zoneCCA Carrier controlled area (CCA), i.e. a zone of 50 NM radius around the carrier.
@@ -1735,10 +1731,6 @@ AIRBOSS.Difficulty = {
 -- @field #table trapsheet Groove data table recorded every 0.5 seconds.
 -- @field #boolean trapon If true, save trap sheets.
 -- @field #string debriefschedulerID Debrief scheduler ID.
--- 
--- @field Sound.SRS#MSRS SRS
--- @field Sound.SRS#MSRSQUEUE SRSQ
--- 
 -- @extends #AIRBOSS.FlightGroup
 
 --- Main group level radio menu: F10 Other/Airboss.
@@ -1884,7 +1876,6 @@ function AIRBOSS:New( carriername, alias )
 
   -- Set up Airboss radio.
   self:SetMarshalRadio()
-  self:SetAirbossRadio()
 
   -- Set up LSO radio.
   self:SetLSORadio()
@@ -2856,7 +2847,7 @@ function AIRBOSS:SetGlideslopeErrorThresholds(_max,_min, High, HIGH, Low, LOW)
 
   --Check if V/STOL Carrier
   if self.carriertype == AIRBOSS.CarrierType.INVINCIBLE or self.carriertype == AIRBOSS.CarrierType.HERMES or self.carriertype == AIRBOSS.CarrierType.TARAWA or self.carriertype == AIRBOSS.CarrierType.AMERICA or self.carriertype == AIRBOSS.CarrierType.JCARLOS or self.carriertype == AIRBOSS.CarrierType.CANBERRA then
-
+  
   -- allow a larger GSE for V/STOL operations --Pene Testing
   self.gle._max=_max or  0.7
   self.gle.High=High or  1.4
@@ -2873,7 +2864,7 @@ function AIRBOSS:SetGlideslopeErrorThresholds(_max,_min, High, HIGH, Low, LOW)
   self.gle.Low=Low   or -0.6
   self.gle.LOW=LOW   or -0.9
   end
-
+  
   return self
 end
 
@@ -2893,7 +2884,7 @@ function AIRBOSS:SetLineupErrorThresholds(_max,_min, Left, LeftMed, LEFT, Right,
 
   --Check if V/STOL Carrier -- Pene testing
   if self.carriertype == AIRBOSS.CarrierType.INVINCIBLE or self.carriertype == AIRBOSS.CarrierType.HERMES or self.carriertype == AIRBOSS.CarrierType.TARAWA or self.carriertype == AIRBOSS.CarrierType.AMERICA or self.carriertype == AIRBOSS.CarrierType.JCARLOS or self.carriertype == AIRBOSS.CarrierType.CANBERRA then
-
+  
   -- V/STOL Values -- allow a larger LUE for V/STOL operations
   self.lue._max=_max   or  1.8
   self.lue._min=_min   or -1.8
@@ -2914,7 +2905,7 @@ function AIRBOSS:SetLineupErrorThresholds(_max,_min, Left, LeftMed, LEFT, Right,
   self.lue.RightMed=RightMed or  2.0
   self.lue.RIGHT=RIGHT or  3.0
   end
-
+  
   return self
 end
 
@@ -3052,54 +3043,10 @@ function AIRBOSS:SetBeaconRefresh( TimeInterval )
   return self
 end
 
---- Set up SRS for usage without sound files
--- @param #AIRBOSS self
--- @param #string PathToSRS Path to SRS folder, e.g. "C:\\Program Files\\DCS-SimpleRadio-Standalone".
--- @param #number Port Port of the SRS server, defaults to 5002.
--- @param #string Culture (Optional, Airboss Culture)  Culture, defaults to "en-US".
--- @param #string Gender (Optional, Airboss Gender)  Gender, e.g. "male" or "female". Defaults to "male".
--- @param #string Voice (Optional, Airboss Voice) Set to use a specific voice. Will **override gender and culture** settings.  
--- @param #string GoogleCreds (Optional) Path to Google credentials, e.g. "C:\\Program Files\\DCS-SimpleRadio-Standalone\\yourgooglekey.json".
--- @param #number Volume (Optional) E.g. 0.75. Defaults to 1.0 (loudest).
--- @param #table AltBackend (Optional) See MSRS for details.
--- @return #AIRBOSS self
-function AIRBOSS:EnableSRS(PathToSRS,Port,Culture,Gender,Voice,GoogleCreds,Volume,AltBackend)
-  -- SRS
-  local Frequency = self.AirbossRadio.frequency
-  local Modulation = self.AirbossRadio.modulation
-  self.SRS = MSRS:New(PathToSRS,Frequency,Modulation,Volume,AltBackend)
-  self.SRS:SetCoalition(self:GetCoalition())
-  self.SRS:SetCoordinate(self:GetCoordinate())
-  self.SRS:SetCulture(Culture or "en-US")
-  --self.SRS:SetFrequencies(Frequencies)
-  self.SRS:SetGender(Gender or "male")
-  self.SRS:SetPath(PathToSRS)
-  self.SRS:SetPort(Port or 5002)
-  self.SRS:SetLabel(self.AirbossRadio.alias or "AIRBOSS")
-  --self.SRS:SetModulations(Modulations)
-  if GoogleCreds then
-    self.SRS:SetGoogle(GoogleCreds)
-  end
-  if Voice then
-    self.SRS:SetVoice(Voice)
-  end
-  self.SRS:SetVolume(Volume or 1.0)
-  -- SRSQUEUE
-  self.SRSQ = MSRSQUEUE:New("AIRBOSS")
-  self.SRSQ:SetTransmitOnlyWithPlayers(true)
-  if not self.PilotRadio then 
-    self:SetSRSPilotVoice()
-  end
-  return self  
-end
-
 --- Set LSO radio frequency and modulation. Default frequency is 264 MHz AM.
 -- @param #AIRBOSS self
 -- @param #number Frequency (Optional) Frequency in MHz. Default 264 MHz.
 -- @param #string Modulation (Optional) Modulation, "AM" or "FM". Default "AM".
--- @param #string Voice (Optional) SRS specific voice
--- @param #string Gender (Optional) SRS specific gender
--- @param #string Culture (Optional) SRS specific culture
 -- @return #AIRBOSS self
 function AIRBOSS:SetLSORadio( Frequency, Modulation, Voice, Gender, Culture  )
 
@@ -3116,9 +3063,6 @@ function AIRBOSS:SetLSORadio( Frequency, Modulation, Voice, Gender, Culture  )
   self.LSORadio.frequency = self.LSOFreq
   self.LSORadio.modulation = self.LSOModu
   self.LSORadio.alias = "LSO"
-  self.LSORadio.voice = Voice
-  self.LSORadio.gender = Gender or "male"
-  self.LSORadio.culture = Culture or "en-US"
 
   return self
 end
@@ -3167,9 +3111,6 @@ end
 -- @param #AIRBOSS self
 -- @param #number Frequency (Optional) Frequency in MHz. Default 305 MHz.
 -- @param #string Modulation (Optional) Modulation, "AM" or "FM". Default "AM".
--- @param #string Voice (Optional) SRS specific voice
--- @param #string Gender (Optional) SRS specific gender
--- @param #string Culture (Optional) SRS specific culture
 -- @return #AIRBOSS self
 function AIRBOSS:SetMarshalRadio( Frequency, Modulation, Voice, Gender, Culture )
 
@@ -3186,9 +3127,6 @@ function AIRBOSS:SetMarshalRadio( Frequency, Modulation, Voice, Gender, Culture
   self.MarshalRadio.frequency = self.MarshalFreq
   self.MarshalRadio.modulation = self.MarshalModu
   self.MarshalRadio.alias = "MARSHAL"
-  self.MarshalRadio.voice = Voice
-  self.MarshalRadio.gender = Gender or "male"
-  self.MarshalRadio.culture = Culture or "en-US"
 
   return self
 end
@@ -3370,7 +3308,7 @@ function AIRBOSS:SetExtraVoiceOversAI(status)
   self.xtVoiceOversAI=status
   return self
 end
-
+ 
 --- Do not handle AI aircraft.
 -- @param #AIRBOSS self
 -- @return #AIRBOSS self
@@ -3485,9 +3423,9 @@ end
 -- @param #string Host Host. Default `"127.0.0.1"`.
 -- @return #AIRBOSS self
 function AIRBOSS:SetFunkManOn(Port, Host)
-
+  
   self.funkmanSocket=SOCKET:New(Port, Host)
-
+  
   return self
 end
 
@@ -5459,7 +5397,6 @@ function AIRBOSS:_GetAircraftParameters( playerData, step )
   local skyhawk = playerData.actype == AIRBOSS.AircraftCarrier.A4EC
   local tomcat = playerData.actype == AIRBOSS.AircraftCarrier.F14A or playerData.actype == AIRBOSS.AircraftCarrier.F14B
   local harrier = playerData.actype == AIRBOSS.AircraftCarrier.AV8B
-  local goshawk = playerData.actype == AIRBOSS.AircraftCarrier.T45C
 
   -- Return values.
   local alt
@@ -5925,27 +5862,64 @@ function AIRBOSS:_ScanCarrierZone()
     -- Get aircraft type name.
     local actype = group:GetTypeName()
 
-    -- Create a new flight group
     if knownflight then
 
+      -- Debug output.
+      self:T2(self.lid..string.format("Known flight group %s of type %s in CCA.", groupname, actype))
+
       -- Check if flight is AI and if we want to handle it at all.
-      if knownflight.ai and knownflight.flag == -100 and self.handleai then
+      if knownflight.ai and self.handleai then
 
-        local putintomarshal = false
+        -- Defines if AI group should be handled by the airboss.
+        local iscarriersquad=true
 
-        -- Get flight group.
-        local flight = _DATABASE:GetOpsGroup( groupname )
-
-        if flight and flight:IsInbound() and flight.destbase:GetName() == self.carrier:GetName() then
-          if flight.ishelo then
+        -- Check if AI group is part of the group set if a set was defined.
+        if self.squadsetAI then
+          local group=self.squadsetAI:FindGroup(groupname)
+          if group then
+            iscarriersquad=true
           else
-            putintomarshal = true
+            iscarriersquad=false
           end
-          flight.airboss = self
         end
 
-        -- Send AI flight to marshal stack.
-        if putintomarshal then
+        -- Check if group was explicitly excluded.
+        if self.excludesetAI then
+          local group=self.excludesetAI:FindGroup(groupname)
+          if group then
+            iscarriersquad=false
+          end
+                 
+        end
+
+
+        -- Get distance to carrier.
+        local dist=knownflight.group:GetCoordinate():Get2DDistance(self:GetCoordinate())
+
+        -- Close in distance. Is >0 if AC comes closer wrt to first detected distance d0.
+        local closein=knownflight.dist0-dist
+
+        -- Debug info.
+        self:T3(self.lid..string.format("Known AI flight group %s closed in by %.1f NM", knownflight.groupname, UTILS.MetersToNM(closein)))
+
+        -- Is this group the tanker?
+        local istanker=self.tanker and self.tanker.tanker:GetName()==groupname
+
+        -- Is this group the AWACS?
+        local isawacs=self.awacs and self.awacs.tanker:GetName()==groupname
+
+        -- Send tanker to marshal stack?
+        local tanker2marshal = istanker and self.tanker:IsReturning() and self.tanker.airbase:GetName()==self.airbase:GetName() and knownflight.flag==-100 and self.tanker.recovery==true
+
+        -- Send AWACS to marhsal stack?
+        local awacs2marshal  = isawacs  and self.awacs:IsReturning()  and self.awacs.airbase:GetName()==self.airbase:GetName()  and knownflight.flag==-100 and self.awacs.recovery==true
+
+        -- Put flight into Marshal.
+        local putintomarshal=closein>UTILS.NMToMeters(5) and knownflight.flag==-100 and iscarriersquad and istanker==false and isawacs==false
+
+        -- Send AI flight to marshal stack if group closes in more than 5 and has initial flag value.
+        if putintomarshal or tanker2marshal or awacs2marshal then
+
 
           -- Get the next free stack for current recovery case.
           local stack = self:_GetFreeStack( knownflight.ai )
@@ -6467,7 +6441,7 @@ function AIRBOSS:_LandAI( flight )
   -- Aircraft speed when flying the pattern.
   local Speed = UTILS.KnotsToKmph( 200 )
 
-  if   flight.actype == AIRBOSS.AircraftCarrier.HORNET
+  if   flight.actype == AIRBOSS.AircraftCarrier.HORNET 
     or flight.actype == AIRBOSS.AircraftCarrier.FA18C
     or flight.actype == AIRBOSS.AircraftCarrier.RHINOE
     or flight.actype == AIRBOSS.AircraftCarrier.RHINOF
@@ -8205,7 +8179,7 @@ end
 -- @param Core.Event#EVENTDATA EventData
 function AIRBOSS:OnEventBirth( EventData )
   self:F3( { eventbirth = EventData } )
-
+  
   -- Nil checks.
   if EventData == nil then
     self:E( self.lid .. "ERROR: EventData=nil in event BIRTH!" )
@@ -8217,9 +8191,9 @@ function AIRBOSS:OnEventBirth( EventData )
     self:E( EventData )
     return
   end
-
+  
   if EventData.IniObjectCategory ~= Object.Category.UNIT then return end
-
+  
   local _unitName = EventData.IniUnitName
   local _unit, _playername = self:_GetPlayerUnitAndName( _unitName )
 
@@ -9297,9 +9271,9 @@ function AIRBOSS:_DirtyUp( playerData )
     self:_PlayerHint( playerData )
 
     -- Radio call "Say/Fly needles". Delayed by 10/15 seconds.
-    if   playerData.actype == AIRBOSS.AircraftCarrier.HORNET
-      or playerData.actype == AIRBOSS.AircraftCarrier.F14A
-      or playerData.actype == AIRBOSS.AircraftCarrier.F14B
+    if   playerData.actype == AIRBOSS.AircraftCarrier.HORNET 
+      or playerData.actype == AIRBOSS.AircraftCarrier.F14A 
+      or playerData.actype == AIRBOSS.AircraftCarrier.F14B 
       or playerData.actype == AIRBOSS.AircraftCarrier.RHINOE
       or playerData.actype == AIRBOSS.AircraftCarrier.RHINOF
       or playerData.actype == AIRBOSS.AircraftCarrier.GROWLER
@@ -9896,24 +9870,24 @@ function AIRBOSS:_Groove( playerData )
       return
     end
 
-   end
-
+   end   
+    
     -- Long V/STOL groove time Wave Off over 75 seconds to IC - TOPGUN level Only. --pene testing (WIP)--- Need to think more about this.
-
+   
   --if rho>=RAR and rho<=RIC and not playerData.waveoff and playerData.difficulty==AIRBOSS.Difficulty.HARD and  playerData.actype==      AIRBOSS.AircraftCarrier.AV8B then
    -- Get groove time
    --local vSlow=groovedata.time
-   -- If too slow wave off.
+   -- If too slow wave off.  
    --if vSlow >75 then
-
+  
    -- LSO Wave off!
      --self:RadioTransmission(self.LSORadio, self.LSOCall.WAVEOFF, nil, nil, nil, true)
      --playerData.Tlso=timer.getTime()
-
+   
    -- Player was waved Off
      --playerData.waveoff=true
      --return
-  --end
+  --end    
  --end
 
   -- Groovedata step.
@@ -10111,7 +10085,7 @@ function AIRBOSS:_CheckWaveOff( glideslopeError, lineupError, AoA, playerData )
     waveoff = true
   end
 
-  -- Too slow or too fast? Only for pros.
+  -- Too slow or too fast? Only for pros.  
 
   if playerData.difficulty == AIRBOSS.Difficulty.HARD and playerData.actype ~= AIRBOSS.AircraftCarrier.AV8B then
     -- Get aircraft specific AoA values. Not for AV-8B due to transition to Stable Hover.
@@ -10267,7 +10241,7 @@ function AIRBOSS:_GetSternCoord()
     elseif case==2 or case==1 then
     -- V/Stol: Translate 8 meters port.
     self.sterncoord:Translate(self.carrierparam.sterndist, hdg, true, true):Translate(8, FB-90, true, true)
-	end
+  end
   elseif self.carriertype==AIRBOSS.CarrierType.STENNIS then
     -- Stennis: translate 7 meters starboard wrt Final bearing.
     self.sterncoord:Translate( self.carrierparam.sterndist, hdg, true, true ):Translate( 7, FB + 90, true, true )
@@ -10416,7 +10390,7 @@ function AIRBOSS:_Trapped( playerData )
 
     -- Get current wire (estimate). This now based on the position where the player comes to a standstill which should reflect the trapped wire better.
     local dcorr = 100
-    if   playerData.actype == AIRBOSS.AircraftCarrier.HORNET
+    if   playerData.actype == AIRBOSS.AircraftCarrier.HORNET 
       or playerData.actype == AIRBOSS.AircraftCarrier.RHINOE
       or playerData.actype == AIRBOSS.AircraftCarrier.RHINOF
       or playerData.actype == AIRBOSS.AircraftCarrier.GROWLER then
@@ -10941,7 +10915,7 @@ function AIRBOSS:_GetZoneAbeamLandingSpot()
 
   -- Coordinate array. Pene Testing extended Abeam landing spot V/STOL.
   local p={}
-
+  
   -- Points.
   p[1] = S:Translate( 15, FB ):Translate( 15, FB + 90 ) -- Top-Right
   p[2] = S:Translate( -45, FB ):Translate( 15, FB + 90 ) -- Bottom-Right
@@ -11389,7 +11363,7 @@ function AIRBOSS:_GetOptLandingCoordinate()
 
   -- set Case III V/STOL abeam landing spot over deck -- Pene Testing
   if self.carriertype==AIRBOSS.CarrierType.INVINCIBLE or self.carriertype==AIRBOSS.CarrierType.HERMES or self.carriertype==AIRBOSS.CarrierType.TARAWA or self.carriertype==AIRBOSS.CarrierType.AMERICA or self.carriertype==AIRBOSS.CarrierType.JCARLOS or self.carriertype==AIRBOSS.CarrierType.CANBERRA then
-
+  
     if case==3 then
 
       -- Landing coordinate.
@@ -11397,7 +11371,7 @@ function AIRBOSS:_GetOptLandingCoordinate()
 
       -- Altitude 120ft -- is this corect for Case III?
       self.landingcoord:SetAltitude(UTILS.FeetToMeters(120))
-
+ 
     elseif case==2 or case==1 then
 
       -- Landing 100 ft abeam, 120 ft alt.
@@ -11407,7 +11381,7 @@ function AIRBOSS:_GetOptLandingCoordinate()
       self.landingcoord:SetAltitude(UTILS.FeetToMeters(120))
 
     end
-
+  
   else
 
     -- Ideally we want to land between 2nd and 3rd wire.
@@ -11551,48 +11525,8 @@ end
 -- @return #number Carrier heading in degrees.
 function AIRBOSS:GetHeadingIntoWind( magnetic, coord )
 
-  local function adjustDegreesForWindSpeed(windSpeed)
-    local degreesAdjustment = 0
-  -- the windspeeds are in m/s
-  
-  -- +0 degrees at 15m/s = 37kts
-  -- +0 degrees at 14m/s = 35kts
-  -- +0 degrees at 13m/s = 33kts
-  -- +4 degrees at 12m/s = 31kts
-  -- +4 degrees at 11m/s = 29kts
-  -- +4 degrees at 10m/s = 27kts
-  -- +4 degrees at 9m/s = 27kts
-  -- +4 degrees at 8m/s = 27kts
-  -- +8 degrees at 7m/s = 27kts
-  -- +8 degrees at 6m/s = 27kts
-  -- +8 degrees at 5m/s = 26kts
-  -- +20 degrees at 4m/s = 26kts
-  -- +20 degrees at 3m/s = 26kts
-  -- +30 degrees at 2m/s = 26kts 1s
-  
-    if windSpeed > 0 and windSpeed < 3 then
-      degreesAdjustment = 30
-    elseif windSpeed >= 3 and windSpeed < 5 then
-      degreesAdjustment = 20
-    elseif windSpeed >= 5 and windSpeed < 8 then
-      degreesAdjustment = 8
-    elseif windSpeed >= 8 and windSpeed < 13 then
-      degreesAdjustment = 4
-    elseif windSpeed >= 13 then
-      degreesAdjustment = 0
-    end
-  
-    return degreesAdjustment
-  end
-
   -- Get direction the wind is blowing from. This is where we want to go.
   local windfrom, vwind = self:GetWind( nil, nil, coord )
-  
-  --self:I("windfrom="..windfrom.." vwind="..vwind)
-  
-  vwind = vwind + adjustDegreesForWindSpeed(vwind)
-  
-  --self:I("windfrom="..windfrom.." (c)vwind="..vwind)
 
   -- Actually, we want the runway in the wind.
   local intowind = windfrom - self.carrierparam.rwyangle
@@ -12042,7 +11976,7 @@ function AIRBOSS:_LSOgrade( playerData )
   local nS=count(G, '%(')
   local nN=N-nS-nL
   local nNv=Nv-nS-nL
-
+  
   -- Groove time 15-18.99 sec for a unicorn. Or 60-65 for V/STOL unicorn.
   local Tgroove=playerData.Tgroove
   local TgrooveUnicorn=Tgroove and (Tgroove>=15.0 and Tgroove<=18.99) or false
@@ -12159,7 +12093,7 @@ function AIRBOSS:_LSOgrade( playerData )
 
   elseif not playerData.hover and playerData.actype == AIRBOSS.AircraftCarrier.AV8B then
     -------------------------------
-    -- AV-8B not cleared to land -- -- Landing clearence is carrier from LC to Landing
+    -- AV-8B not cleared to land -- -- Landing clearence is carrier from LC to Landing 
     -------------------------------
     if playerData.landed then
       -- AIRBOSS wants your balls!
@@ -13527,8 +13461,8 @@ function AIRBOSS:CarrierTurnIntoWind( time, vdeck, uturn )
   -- Wind speed.
   local _, vwind = self:GetWind()
 
-  -- Speed of carrier in m/s but at least 4 knots.
-  local vtot = math.max( vdeck - vwind, UTILS.KnotsToMps( 4 ) )
+  -- Speed of carrier in m/s but at least 2 knots.
+  local vtot = math.max( vdeck - vwind, UTILS.KnotsToMps( 2 ) )
 
   -- Distance to travel
   local dist = vtot * time
@@ -14731,140 +14665,59 @@ function AIRBOSS:RadioTransmission( radio, call, loud, delay, interval, click, p
   if radio == nil or call == nil then
     return
   end
-  
-  if not self.SRS then
-  
-    -- Create a new radio transmission item.
-    local transmission = {} -- #AIRBOSS.Radioitem
-  
-    transmission.radio = radio
-    transmission.call = call
-    transmission.Tplay = timer.getAbsTime() + (delay or 0)
-    transmission.interval = interval
-    transmission.isplaying = false
-    transmission.Tstarted = nil
-    transmission.loud = loud and call.loud
-  
-    -- Player onboard number if sender has one.
-    if self:_IsOnboard( call.modexsender ) then
-      self:_Number2Radio( radio, call.modexsender, delay, 0.3, pilotcall )
-    end
-  
-    -- Play onboard number if receiver has one.
-    if self:_IsOnboard( call.modexreceiver ) then
-      self:_Number2Radio( radio, call.modexreceiver, delay, 0.3, pilotcall )
-    end
-  
-    -- Add transmission to the right queue.
-    local caller = ""
-    if radio.alias == "LSO" then
-  
-      table.insert( self.RQLSO, transmission )
-  
-      caller = "LSOCall"
-  
-      -- Schedule radio queue checks.
-      if not self.RQLid then
-        self:T( self.lid .. string.format( "Starting LSO radio queue." ) )
-        self.RQLid = self.radiotimer:Schedule( nil, AIRBOSS._CheckRadioQueue, { self, self.RQLSO, "LSO" }, 0.02, 0.05 )
-      end
-  
-    elseif radio.alias == "MARSHAL" then
-  
-      table.insert( self.RQMarshal, transmission )
-  
-      caller = "MarshalCall"
-  
-      if not self.RQMid then
-        self:T( self.lid .. string.format( "Starting Marhal radio queue." ) )
-        self.RQMid = self.radiotimer:Schedule( nil, AIRBOSS._CheckRadioQueue, { self, self.RQMarshal, "MARSHAL" }, 0.02, 0.05 )
-      end
-  
-    end
-  
-    -- Append radio click sound at the end of the transmission.
-    if click then
-      self:RadioTransmission( radio, self[caller].CLICK, false, delay )
-    end
-  
-  else
-    -- SRS transmission
-    
-    local frequency = self.MarshalRadio.frequency
-    local modulation = self.MarshalRadio.modulation
-    local voice = nil
-    local gender = nil
-    local culture = nil
-    
-    if radio.alias == "AIRBOSS" then
-      frequency = self.AirbossRadio.frequency
-      modulation = self.AirbossRadio.modulation
-      voice = self.AirbossRadio.voice
-      gender = self.AirbossRadio.gender
-      culture = self.AirbossRadio.culture
-    end
-    
-    if radio.alias == "MARSHAL" then
-      voice = self.MarshalRadio.voice
-      gender = self.MarshalRadio.gender
-      culture = self.MarshalRadio.culture
-    end
-    
-    if radio.alias == "LSO" then
-      frequency = self.LSORadio.frequency
-      modulation = self.LSORadio.modulation
-      voice = self.LSORadio.voice
-      gender = self.LSORadio.gender
-      culture = self.LSORadio.culture
-    end
-    
-    if pilotcall then
-      voice = self.PilotRadio.voice
-      gender = self.PilotRadio.gender
-      culture = self.PilotRadio.culture
-      radio.alias = "PILOT"
-    end
 
-    if not radio.alias then
-      -- TODO - what freq to use here?
-      frequency = self.AirbossRadio.frequency
-      modulation = self.AirbossRadio.modulation
-      radio.alias = "AIRBOSS"
-    end
-    
-    local volume = nil
-    
-    if loud then
-      volume = 1.0
-    end
-    
-    --local text = tostring(call.modexreceiver).."; "..radio.alias.."; "..call.subtitle
-    local text = call.subtitle
-    self:I(self.lid..text) 
-    local srstext = self:_GetNiceSRSText(text)
-    self.SRSQ:NewTransmission(srstext, call.duration, self.SRS, nil, 0.1, nil, call.subtitle, call.subduration, frequency, modulation, gender, culture, voice, volume, radio.alias)
+  -- Create a new radio transmission item.
+  local transmission = {} -- #AIRBOSS.Radioitem
+
+  transmission.radio = radio
+  transmission.call = call
+  transmission.Tplay = timer.getAbsTime() + (delay or 0)
+  transmission.interval = interval
+  transmission.isplaying = false
+  transmission.Tstarted = nil
+  transmission.loud = loud and call.loud
+
+  -- Player onboard number if sender has one.
+  if self:_IsOnboard( call.modexsender ) then
+    self:_Number2Radio( radio, call.modexsender, delay, 0.3, pilotcall )
   end
-end
 
---- Set SRS voice for the pilot calls.
--- @param #AIRBOSS self
--- @param #string Voice (Optional) SRS specific voice
--- @param #string Gender (Optional) SRS specific gender
--- @param #string Culture (Optional) SRS specific culture
--- @return #AIRBOSS self
-function AIRBOSS:SetSRSPilotVoice( Voice, Gender, Culture )
-
-  self.PilotRadio = {} -- #AIRBOSS.Radio
-  self.PilotRadio.alias = "PILOT"
-  self.PilotRadio.voice = Voice or MSRS.Voices.Microsoft.David
-  self.PilotRadio.gender = Gender or "male"
-  self.PilotRadio.culture = Culture or "en-US"
-  
-  if (not Voice) and self.SRS and self.SRS.google then
-    self.PilotRadio.voice = MSRS.Voices.Google.Standard.en_US_Standard_J
+  -- Play onboard number if receiver has one.
+  if self:_IsOnboard( call.modexreceiver ) then
+    self:_Number2Radio( radio, call.modexreceiver, delay, 0.3, pilotcall )
+  end
+
+  -- Add transmission to the right queue.
+  local caller = ""
+  if radio.alias == "LSO" then
+
+    table.insert( self.RQLSO, transmission )
+
+    caller = "LSOCall"
+
+    -- Schedule radio queue checks.
+    if not self.RQLid then
+      self:T( self.lid .. string.format( "Starting LSO radio queue." ) )
+      self.RQLid = self.radiotimer:Schedule( nil, AIRBOSS._CheckRadioQueue, { self, self.RQLSO, "LSO" }, 0.02, 0.05 )
+    end
+
+  elseif radio.alias == "MARSHAL" then
+
+    table.insert( self.RQMarshal, transmission )
+
+    caller = "MarshalCall"
+
+    if not self.RQMid then
+      self:T( self.lid .. string.format( "Starting Marhal radio queue." ) )
+      self.RQMid = self.radiotimer:Schedule( nil, AIRBOSS._CheckRadioQueue, { self, self.RQMarshal, "MARSHAL" }, 0.02, 0.05 )
+    end
+
+  end
+
+  -- Append radio click sound at the end of the transmission.
+  if click then
+    self:RadioTransmission( radio, self[caller].CLICK, false, delay )
   end
-  
-  return self
 end
 
 --- Check if a call needs a subtitle because the complete voice overs are not available.
@@ -15110,39 +14963,6 @@ function AIRBOSS:_RadioFilename( call, loud, channel )
   return filename
 end
 
---- Format text into SRS friendly string
--- @param #AIRBOSS self
--- @param #string text
--- @return #string text
-function AIRBOSS:_GetNiceSRSText(text)
-  text = string.gsub(text,"================================\n","")
-  text = string.gsub(text,"||","parallel")
-  text = string.gsub(text,"==","perpendicular")
-  text = string.gsub(text,"BRC","Base recovery")
-  --text = string.gsub(text,"#","Number")
-  text = string.gsub(text,"%((%a+)%)","Morse %1")
-  text = string.gsub(text,"°C","° Celsius")
-  text = string.gsub(text,"°"," degrees")
-  text = string.gsub(text," FB "," Final bearing ")
-  text = string.gsub(text," ops"," operations ")
-  text = string.gsub(text," kts"," knots")
-  text = string.gsub(text,"TACAN","Tackan")
-  text = string.gsub(text,"ICLS","I.C.L.S.")
-  text = string.gsub(text,"LSO","L.S.O.")
-  text = string.gsub(text,"inHg","inches of Mercury")
-  text = string.gsub(text,"QFE","Q.F.E.")
-  text = string.gsub(text,"hPa","hecto pascal")
-  text = string.gsub(text," NM"," nautical miles")
-  text = string.gsub(text," ft"," feet")
-  text = string.gsub(text,"A/C","aircraft")
-  text = string.gsub(text,"(#[%a%d%p%s]+)\n","")
-  text = string.gsub(text,"%.000"," dot zero")
-  text = string.gsub(text,"00"," double zero")
-  text = string.gsub(text," 0 "," zero " )
-  text = string.gsub(text,"\n","; ")
-  return text
-end
-
 --- Send text message to player client.
 -- Message format will be "SENDER: RECCEIVER, MESSAGE".
 -- @param #AIRBOSS self
@@ -15154,7 +14974,7 @@ end
 -- @param #boolean clear If true, clear screen from previous messages.
 -- @param #number delay Delay in seconds, before the message is displayed.
 function AIRBOSS:MessageToPlayer( playerData, message, sender, receiver, duration, clear, delay )
-  self:I({sender,receiver,message})
+
   if playerData and message and message ~= "" then
 
     -- Default duration.
@@ -15177,91 +14997,49 @@ function AIRBOSS:MessageToPlayer( playerData, message, sender, receiver, duratio
       -- SCHEDULER:New(nil, self.MessageToPlayer, {self, playerData, message, sender, receiver, duration, clear}, delay)
       self:ScheduleOnce( delay, self.MessageToPlayer, self, playerData, message, sender, receiver, duration, clear )
     else
-      
-      if not self.SRS then
-        -- Wait until previous sound finished.
-        local wait = 0
-  
-        -- Onboard number to get the attention.
-        if receiver == playerData.onboard then
-  
-          -- Which voice over number to use.
-          if sender and (sender == "LSO" or sender == "MARSHAL" or sender == "AIRBOSS") then
-  
-            -- User sound of board number.
-            wait = wait + self:_Number2Sound( playerData, sender, receiver )
-  
-          end
-        end
-  
-        -- Negative.
-        if string.find( text:lower(), "negative" ) then
-          local filename = self:_RadioFilename( self.MarshalCall.NEGATIVE, false, "MARSHAL" )
-          USERSOUND:New( filename ):ToGroup( playerData.group, wait )
-          wait = wait + self.MarshalCall.NEGATIVE.duration
-        end
-  
-        -- Affirm.
-        if string.find( text:lower(), "affirm" ) then
-          local filename = self:_RadioFilename( self.MarshalCall.AFFIRMATIVE, false, "MARSHAL" )
-          USERSOUND:New( filename ):ToGroup( playerData.group, wait )
-          wait = wait + self.MarshalCall.AFFIRMATIVE.duration
-        end
-  
-        -- Roger.
-        if string.find( text:lower(), "roger" ) then
-          local filename = self:_RadioFilename( self.MarshalCall.ROGER, false, "MARSHAL" )
-          USERSOUND:New( filename ):ToGroup( playerData.group, wait )
-          wait = wait + self.MarshalCall.ROGER.duration
-        end
-  
-        -- Play click sound to end message.
-        if wait > 0 then
-          local filename = self:_RadioFilename( self.MarshalCall.CLICK )
-          USERSOUND:New( filename ):ToGroup( playerData.group, wait )
-        end
-      else
-        -- SRS transmission
-        local frequency = self.MarshalRadio.frequency
-        local modulation = self.MarshalRadio.modulation
-        local voice = self.MarshalRadio.voice
-        local gender = self.MarshalRadio.gender
-        local culture = self.MarshalRadio.culture
-        
-        if not sender then sender = "AIRBOSS" end
 
-        if string.find(sender,"AIRBOSS" ) then
-          frequency = self.AirbossRadio.frequency
-          modulation = self.AirbossRadio.modulation
-          voice = self.AirbossRadio.voice
-          gender = self.AirbossRadio.gender
-          culture = self.AirbossRadio.culture
+      -- Wait until previous sound finished.
+      local wait = 0
+
+      -- Onboard number to get the attention.
+      if receiver == playerData.onboard then
+
+        -- Which voice over number to use.
+        if sender and (sender == "LSO" or sender == "MARSHAL" or sender == "AIRBOSS") then
+
+          -- User sound of board number.
+          wait = wait + self:_Number2Sound( playerData, sender, receiver )
+
         end
-
-        --if sender == "MARSHAL" then
-          --voice = self.MarshalRadio.voice
-          --gender = self.MarshalRadio.gender
-          --culture = self.MarshalRadio.culture
-        --end
-
-        if sender == "LSO" then
-          frequency = self.LSORadio.frequency
-          modulation = self.LSORadio.modulation
-          voice = self.LSORadio.voice
-          gender = self.LSORadio.gender
-          culture = self.LSORadio.culture
-        --elseif not sender then
-          -- TODO - what freq to use here?
-          --frequency = self.AirbossRadio.frequency
-          --modulation = self.AirbossRadio.modulation
-          --sender = "AIRBOSS"
-        end
-
-        self:I(self.lid..text)
-        self:I({sender,frequency,modulation,voice})
-        local srstext = self:_GetNiceSRSText(text)
-        self.SRSQ:NewTransmission(srstext,duration,self.SRS,nil,0.1,nil,nil,nil,frequency,modulation,gender,culture,voice,1.0,sender)
       end
+
+      -- Negative.
+      if string.find( text:lower(), "negative" ) then
+        local filename = self:_RadioFilename( self.MarshalCall.NEGATIVE, false, "MARSHAL" )
+        USERSOUND:New( filename ):ToGroup( playerData.group, wait )
+        wait = wait + self.MarshalCall.NEGATIVE.duration
+      end
+
+      -- Affirm.
+      if string.find( text:lower(), "affirm" ) then
+        local filename = self:_RadioFilename( self.MarshalCall.AFFIRMATIVE, false, "MARSHAL" )
+        USERSOUND:New( filename ):ToGroup( playerData.group, wait )
+        wait = wait + self.MarshalCall.AFFIRMATIVE.duration
+      end
+
+      -- Roger.
+      if string.find( text:lower(), "roger" ) then
+        local filename = self:_RadioFilename( self.MarshalCall.ROGER, false, "MARSHAL" )
+        USERSOUND:New( filename ):ToGroup( playerData.group, wait )
+        wait = wait + self.MarshalCall.ROGER.duration
+      end
+
+      -- Play click sound to end message.
+      if wait > 0 then
+        local filename = self:_RadioFilename( self.MarshalCall.CLICK )
+        USERSOUND:New( filename ):ToGroup( playerData.group, wait )
+      end
+
       -- Text message to player client.
       if playerData.client then
         MESSAGE:New( text, duration, sender, clear ):ToClient( playerData.client )
@@ -15545,13 +15323,13 @@ end
 -- @param #string modex Tail number.
 function AIRBOSS:_MarshallInboundCall(unit, modex)
 
-  -- Calculate
+  -- Calculate 
   local vectorCarrier = self:GetCoordinate():GetDirectionVec3(unit:GetCoordinate())
   local bearing =  UTILS.Round(unit:GetCoordinate():GetAngleDegrees( vectorCarrier ), 0)
   local distance = UTILS.Round(UTILS.MetersToNM(unit:GetCoordinate():Get2DDistance(self:GetCoordinate())),0)
   local angels = UTILS.Round(UTILS.MetersToFeet(unit:GetHeight()/1000),0)
   local state = UTILS.Round(self:_GetFuelState(unit)/1000,1)
-
+  
   -- Pilot: "Marshall, [modex], marking mom's [bearing] for [distance], angels [XX], state [X.X]"
   local text=string.format("Marshal, %s, marking mom's %d for %d, angels %d, state %.1f", modex, bearing, distance, angels, state)
   -- Debug message.
@@ -16378,8 +16156,8 @@ function AIRBOSS:_RequestMarshal( _unitName )
       -- Voice over of inbound call (regardless of airboss rejecting it or not)
       if self.xtVoiceOvers then
         self:_MarshallInboundCall(_unit, playerData.onboard)
-      end
-
+      end   
+    
       -- Check if player is in CCA
       local inCCA = playerData.unit:IsInZone( self.zoneCCA )
 
@@ -16600,7 +16378,7 @@ function AIRBOSS:_RequestSpinning( _unitName )
         -- Some advice.
         if playerData.difficulty == AIRBOSS.Difficulty.EASY then
           local text = "Climb to 1200 feet and proceed to the initial again."
-          self:MessageToPlayer( playerData, text, "AIRBOSS", "" )
+          self:MessageToPlayer( playerData, text, "INSTRUCTOR", "" )
         end
 
         return
@@ -16627,12 +16405,12 @@ function AIRBOSS:_RequestCommence( _unitName )
     local playerData = self.players[_playername] -- #AIRBOSS.PlayerData
 
     if playerData then
-
+   
       -- Voice over of Commencing call (regardless of Airboss will rejected or not)
       if self.xtVoiceOvers then
         self:_CommencingCall(_unit, playerData.onboard)
       end
-
+      
       -- Check if unit is in CCA.
       local text = ""
       local cleared = false
@@ -17355,7 +17133,7 @@ function AIRBOSS:_DisplayCarrierInfo( _unitname )
         state = "Deck closed"
       end
       if self.turning then
-        state = state .. " (currently turning)"
+        state = state .. " (turning currently)"
       end
 
       -- Message text.