A member of the Chilean armed forces adjusts his helmet prior to participating in PANAMAX 2011 night-time exercises. PANAMAX 2011 is an annual multinational training exercise sponsored by U.S. Southern Command focusing on the security of the Panama Canal. The exercise involves 16 nations and more than 3,500 civil and military personnel from across the Western Hemisphere. The 12-day exercise takes place off the coasts of Panama and the United States, including Fort Sam Houston, Texas, Miami, Naval Station Mayport, Florida and Stennis, Mississippi, among others from Aug 15-26. (U.S. Navy photo by Petty Officer 1st Class Elisandro T. Diaz)