[Imp]

Don't take this as gospel but helicopter operations are dangerous.
USA losses in Vietnam were in 4 figures & over 100 were lost in Afghanistan & Iraq.
US Apache squadrons contain as many scout helos as attack to help spot incoming fire & targets.
Troop landings are normally only conducted in areas a recon team have scouted, they don't go in blind. If its to hot for the recon team its to hot for the landing as you are supposed to debark in a safe location.