Two Marine Corp Boeing CH-46 Sea Knight helicopters fly south above Santa Monica Bay on Thursday, February 11,2010. The Boeing CH-46 Sea Knight is a medium-lift tandem rotor transport helicopter, used by the United States Marine Corps (USMC) to provide all-weather, day-or-night assault transport of combat troops, supplies and equipment. Assault Support is its primary function, and the movement of supplies and equipment is secondary.
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