Marines with Marine Heavy Helicopter Training Squadron 302 wait aboard a CH-53E Super Stallion for signals from a Combat Logistics Battalion 6, Transportation Support Battalion, landing support specialist, indicating it is safe to take off with the cargo, during external lifts at landing zone Phoenix, Camp Davis, North Carolina, April 6, 2016. The purpose of external lifts is to transport larger amounts of supplies and heavy gear where other ground vehicles can’t access. (U.S. Marine Corps photo by Lance Cpl. Aaron Fiala/Released.) - Marines with Marine Heavy Helicopter Training Squadron 302 wait aboard a CH-53E Super Stallion for signals from a Combat Logistics Battalion 6, Transportation Support Battalion, landing support specialist, indicating it is safe to take off with the cargo, during external lifts at landing zone Phoenix, Camp Davis, North Carolina, April 6, 2016. The purpose of external lifts is to transport larger amounts of supplies and heavy gear where other ground vehicles can’t access. (U.S. Marine Corps photo by Lance Cpl. Aaron Fiala/Released.)