Sound for script actions

[FooxLee]

Gentlemen, I sincerely declare that your script is great!
Could you please tell me how to add sound to actions, for example, loading/unloading infantry,
EXAMPLE: Troops are loaded into the chopper - beep beep .
Paratroopers unloading - beep =)
All the head broke, can not figure it out =( can share a fragment of the script, where it is implemented =) thanks