Some nil checks to the A2A dispatcher, keeping it from detecting nil units, added locale to Settings and use of it to TextAndSound

Moose Development/Moose/AI/AI_A2A_Dispatcher.lua

@@ -884,8 +884,9 @@ do -- AI_A2A_DISPATCHER
   --- Enumerator for spawns at airbases
   -- @type AI_A2A_DISPATCHER.Takeoff
   -- @extends Wrapper.Group#GROUP.Takeoff
-
-  --- @field #AI_A2A_DISPATCHER.Takeoff Takeoff
+  
+  ---
+  -- @field #AI_A2A_DISPATCHER.Takeoff Takeoff
   AI_A2A_DISPATCHER.Takeoff = GROUP.Takeoff
 
   --- Defnes Landing location.
@@ -3048,7 +3049,20 @@ do -- AI_A2A_DISPATCHER
     for FriendlyDistance, AIFriendly in UTILS.spairs( DefenderFriendlies or {} ) do
       -- We only allow to ENGAGE targets as long as the Units on both sides are balanced.
       if AttackerCount > DefenderCount then
-        local Friendly = AIFriendly:GetGroup() -- Wrapper.Group#GROUP
+    --self:I("***** AI_A2A_DISPATCHER:CountDefendersToBeEngaged() *****\nThis is supposed to be a UNIT:")
+    if AIFriendly then
+      local classname = AIFriendly.ClassName or "No Class Name"
+      local unitname = AIFriendly.IdentifiableName or "No Unit Name"
+      --self:I("Class Name: " .. classname)
+      --self:I("Unit Name: " .. unitname)
+      --self:I({AIFriendly})
+    end
+    local Friendly = nil
+    if AIFriendly and AIFriendly:IsAlive() then
+      --self:I("AIFriendly alive, getting GROUP")
+      Friendly = AIFriendly:GetGroup() -- Wrapper.Group#GROUP
+    end
+    
         if Friendly and Friendly:IsAlive() then
           -- Ok, so we have a friendly near the potential target.
           -- Now we need to check if the AIGroup has a Task.