diff --git a/scripts/python/API/api.py b/scripts/python/API/api.py
index 60a97f3f..8f2e6adb 100644
--- a/scripts/python/API/api.py
+++ b/scripts/python/API/api.py
@@ -157,17 +157,7 @@ class API:
         except Exception as e:
             # Log the error but don't crash the update process
             self.logger.error(f"Error in callback: {e}")
-            
-    def register_on_update_callback(self, callback):
-        """
-        Register a callback function to be called on each update.
-        
-        Args:
-            callback (function): The function to call on update. Can be sync or async. 
-                                The function should accept a single argument, which is the API instance.
-        """
-        self.on_update_callback = callback
-
+       
     async def _run_async(self):
         """
         Async implementation of the API service loop.
@@ -203,6 +193,16 @@ class API:
         finally:
             self.logger.info("API stopped")
             self.running = False
+     
+    def register_on_update_callback(self, callback):
+        """
+        Register a callback function to be called on each update.
+        
+        Args:
+            callback (function): The function to call on update. Can be sync or async. 
+                                The function should accept a single argument, which is the API instance.
+        """
+        self.on_update_callback = callback
 
     def unregister_on_update_callback(self):
         """
diff --git a/scripts/python/API/example_disembarked_infantry.py b/scripts/python/API/example_disembarked_infantry.py
index 02c5bada..4f288bad 100644
--- a/scripts/python/API/example_disembarked_infantry.py
+++ b/scripts/python/API/example_disembarked_infantry.py
@@ -12,7 +12,7 @@ formatter = logging.Formatter('[%(asctime)s] %(name)s - %(levelname)s - %(messag
 handler.setFormatter(formatter)
 logger.addHandler(handler)
 
-units_to_delete = None
+units_to_delete = []
 
 #############################################################################################
 # This class represents a disembarked infantry unit that will engage in combat              
@@ -28,7 +28,7 @@ class DisembarkedInfantry(Unit):
         with the closest enemy unit.
         """
         logger.info(f"Unit {self.unit_id} is now fighting.")
-
+        
         # Pick a random target
         target = self.pick_random_target()
 
@@ -86,7 +86,7 @@ class DisembarkedInfantry(Unit):
 
             # Simulate a firefight in the direction of the enemy
             firefight_destination = self.position.project_with_bearing_and_distance(30, bearing_to_enemy)
-            self.simulate_fire_fight(firefight_destination.lat, firefight_destination.lng, firefight_destination.alt + 1)
+            self.simulate_fire_fight(firefight_destination, firefight_destination.alt + 1)
             
             await asyncio.sleep(10)  # Simulate some time spent in firefight
             self.start_fighting()  # Restart the fighting process
@@ -109,8 +109,8 @@ def on_api_startup(api: API):
         if unit.alive and not unit.human and unit.coalition == "blue":
             units_to_delete.append(unit)
             try:
-                unit.delete_unit(False, "", True)
                 unit.register_on_property_change_callback("alive", on_unit_alive_change)
+                unit.delete_unit(False, "", True)
                 
                 logger.info(f"Deleted unit: {unit}")
             except Exception as e:
@@ -175,7 +175,7 @@ def on_api_update(api: API):
                                 new_unit.__class__ = DisembarkedInfantry
                                 new_unit.start_fighting()
                                 
-                    api.spawn_ground_units([spawn_table], unit.coalition, "", True, 0, lambda new_group_ID: execution_callback(new_group_ID))
+                    api.spawn_ground_units([spawn_table], unit.coalition, "", True, 0, execution_callback)
                     logger.info(f"Spawned new unit succesfully at {spawn_position} with heading {unit.heading}")
             break
 
diff --git a/scripts/python/API/example_voice_control.py b/scripts/python/API/example_voice_control.py
index ecb5a80c..0a073282 100644
--- a/scripts/python/API/example_voice_control.py
+++ b/scripts/python/API/example_voice_control.py
@@ -1,5 +1,6 @@
 
 from math import pi
+import os
 
 from api import API, UnitSpawnTable
 from radio.radio_listener import RadioListener
@@ -70,12 +71,15 @@ def on_message_received(recognized_text: str, unit_id: str, api: API, listener:
         message_filename = api.generate_audio_message("I did not understand")
         listener.transmit_on_frequency(message_filename, listener.frequency, listener.modulation, listener.encryption)
         
+    # Delete the message file after processing
+    os.remove(message_filename)
+        
 if __name__ == "__main__":
     api = API()
     logger.info("API initialized")
     
     listener = api.create_radio_listener()
     listener.start(frequency=251.000e6, modulation=0, encryption=0)
-    listener.register_message_callback(lambda wav_filename, unit_id, api=api, listener=listener: on_message_received(wav_filename, unit_id, api, listener))
+    listener.register_message_callback(lambda recognized_text, unit_id, api=api, listener=listener: on_message_received(recognized_text, unit_id, api, listener))
 
     api.run()
\ No newline at end of file