i have made a script that makes helecopters fly to the player after he has requested it over the radio.
Here it is (note: this is my first script)
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aP sideChat "ALPHA TO BRAVO. We need backup Now!"
~2
bravo sideChat "BRAVO TO ALPHA. We are on our way"
bravo DoMove getpos aP
bravo setSpeedMode "FULL"
bravo setCombatMode "RED"