Nui Ba Den, Vietnam, October 1969: Troops install RPG wire as a Huey helicopter takes off of the helipad behind them atop Nui Ba Den. The wire fragments enemy RPGs fired at bunkers and was installed all throughout the outpost. The camp is supplied solely by helicopter. Mail, food, soda, parts, fuel, barbers and visitors must all come by helicopter because the Viet Cong own the rest of the mountain.