My condolences to the families of the men killed in the Afghanistan chopper crash over the weekend. They gave their lives defending the country and deserve all honor.
We learned in Viet Nam that landing a chopper under enemy fire is very dangerous, helicopters are not bullet proof. Ordinary rifle fire will penetrate every part of the fuselage, and every part of passengers and crew. According to the TV news, the Chinook was hit with an anti-tank rocket. Such a rocket can kill an armored tank. An all aluminum chopper is no contest.
Helicopter air assault is very dangerous. We should be thankful to have soldiers brave enough to take part in it.