Yeah, that kind of thing happens more often than you would think.
Just yesterday I was in a transport helicopter, carrying a crew to AO. We were intercepted by 3 attack helicopters. I thought we were done for, considering we only had 2 miniguns on the side doors, while the attack helicopters had missiles and autocannons. Our pilot managed to perform miraculous flying, and several times missiles zoomed inches away from the helicopter. As I recall, we took two of them down using the miniguns and the pilot made an emergency landing in a clearing, where we all got out and got as far away as possible :P
if anyone is wondering, I was in the crew chief seat (one of the door guns)