If the terrorist have heat seekers, or the updated Russian version of the stinger, we are in some trouble. We do need to start looking at another way to fight this war, its clearly obvious these terrorist/thugs still have freedom of movement.
Not only freedom of movement...but, hugh bunkers filled with ammunitions and arms...
Helos can be shot down with RPG's. It has been done in the past. Just because someone identified a rocket, doesn't mean it's a Stinger or SA-7 (russian).
One of the problems is the amount of people/traffic that are going about their day.