It seems that, during the VN War, when soldier's jump off the choppers, they are to run to their positions, firing their rifles all the way. I understand that they fire their weapons so as to ensure that any hidden enemy would be hit. This, by the way, happened during the Battle of Ia Drang in 1965, a battle made famous by the book and the movie "We were soldiers once, and young." But, in reality, I think that they would only select a landing site after it was secure (perhaps by air strikes) or deemed secure. Airmobile commanders would not land their troops within firing range of their opponents. And, in any case, those initial soldiers firing off their M-16's probably wouldn't have hit anyone. So I think that the idea of jumping off and firing their rifles is actually a waste of time. Can anyone enlighten me?