Yeah,
There are only so many ways to do an ambush on a helo. I am only speculating. I am not an expert and do not have inside knowledge, but ther only a few ways to ambush a helo and only a few ways to respond to such attack. With any responds, it would be hard on anyone trying leave the helo at the time of attack.
My heart goes out to all the families of these soldiers. Hopefully we don't loose any more guys and gals over there.
Chuck