I'm going to be a while completing the stuff I wand to add next so in the meantime here is that latest to play around with.
The _call script triggers the helicopters so edit it to suit, just change the CallHelicopters function parameters which are:
1 - Number of helicopters
2 - Mode 'enemy'/'friendly'/'neutral'
3 - Flight Time in seconds
4 - Return to origin flag, set to true to make them return home after attack, false to let them find a landing site themselves
5 - Height to fly at
6 - Strength (i.e. big numbers if you don't want to be able to shoot them down)
_target script is used to specify the target for friendly mode
_landing script tells the helicopters where to land if the return to origin flag is not set
Rest of the scripts as before, anyone downloading these for the first time go back up the thread to get the quatlib script and see the setup instructions.
have fun.
Been there, done that, got all the T-Shirts!