U.S. Marine Corps Cpl. Paul J. Blaho, with 4th Platoon, Charlie Company, 3rd Assault Amphibian Battalion, 1st Marine Division, cleans his M-4 carbine in the well deck of the amphibious transport dock ship USS New Orleans (LPD 18) in the Pacific Ocean on June 24, 2010. The unit was embarked on the New Orleans in support of operation Partnership of the Americas/Southern Exchange, a combined amphibious exercise designed to enhance cooperative partnerships with maritime forces from Argentina, Mexico, Peru, Brazil, Uruguay and Colombia.