A Marine air crewman assigned to the amphibious assault ship USS Nassau (LHA 4) leans against a MH-53E Sea Dragon helicopter before flight operations during Composite Unit Training Exercise.

ATLANTIC OCEAN (Oct. 26, 2009) A Marine air crewman assigned to the amphibious assault ship USS Nassau (LHA 4) leans against a MH-53E Sea Dragon helicopter before flight operations during Composite Unit Training Exercise (COMPTUEX). COMPTUEX is designed to provide realistic training environments for U.S. naval forces that closely replicate the operational challenges routinely encountered during military operations worldwide. (U.S. Navy photo by Mass Communication Specialist 1st Class Brien Aho) File# 091026-N-5319A-024