Somehow, I don't think that Armstrong read the question at all. :hmm:
In any event, in order to have some choppers attack, do the following things:
1. Place the choppers in the editor whereever you want them to start, and make sure they are in the same group.
2. Give them a Move waypoint, and place this waypoint at their starting position.
3. Create several Destroy waypoints for the choppers, putting each waypoint on one of the SCUD launchers. Note: This method assumes that the SCUDs are in close proximity to one another, and that their order of destruction does not matter.
4. Create a trigger with an X and Y set to however close you want the players to get to the SCUDs before they are considered to have found them. E.g., 500 meters. Have the trigger detect for the presence of west units (if the players are west). Put the trigger in the middle of your group of SCUDs.
5. Synchronize the trigger with the chopper's first waypoint (the Move WP).
Explanation:
The choppers will take off at the start of the mission, but will just hover at the location of the Move waypoint. Once the players move within x meters of the trigger (as per step 4), the trigger will be activated. Since the trigger is synchronized to the choppers' Move WP, they will now be able to continue on to their next WP, which is a Destroy WP on one of the SCUDs. They will go through all of their remaining Destroy WPs until all of the SCUDs are destroyed.
This is the easiest, quickest, scriptless way of doing this.