HELP!! with Ghost Recon Advanced Warfighter 2

Hello guys iam having a great trouble with ghost recon advanced warfighter 2 for pc anyone can help me? I hope yes.

Well my problem is with the mission called codename farallon, is on the part after i located the jam and the helicopters came out...i can destroy one helicopter with the rocket that follows the enemy with the heat but after that i get kill cause i dont have any rocket more. One of my man carry one rocket like i used to destroy one helicopter but he doesnt use it!

Is possible that my man can use that weapon to destroy the helicopter for me? And if the answer is no what can i do also i destroyed the helicopter with normal weapons but i think there is a bug in my game cause when i destroy the parts of the helicopter still falling far far and far and then my objetive dont get updated so i think i have to destroy the helicopter with rockets or iam incorrected? Well i hope anyone can help me...thanks

I would restart the mission. Becuase the Ai is just sometimes retarded. id play it just bob and weave bullets for a while see if he sends a round off, or tell him to attack it. see what happens good luck.