U.S. Marine Corps Cpl. Blaho instructs his squad on where to cross a river while training with Colombian marines on jungle warfare in Colombia on Aug. 2, 2010. The Marines are participating in Partnership of the Americas/Southern Exchange, a combined amphibious exercise designed to enhance cooperative partnerships with participating maritime forces. Blaho is with 4th Platoon, Charlie Company, 3rd Assault Amphibian Battalion, 1st Marine Division.