Chief Petty Officer Joshua Rosario, a hospital corpsman chief with Combat Logistics Battalion 31 (CLB-31), 31st Marine Expeditionary Unit (MEU), positions students with Marnay Primary School for a group photo, March 5. Marines and sailors with CLB-31 are rebuilding a two-room classroom at Marnay Primary School during exercise Balikatan 2010 (BK ’10). Servicemembers from the Armed Forces of the Philippines (AFP) and the U.S. are working together during BK ’10 to hone their civil-military interoperability skills to ensure more responsive, efficient and effective relief efforts. (Official Marine Corps photo by Lance Cpl. Dengrier M. Baez)::r::::n:: - Chief Petty Officer Joshua Rosario, a hospital corpsman chief with Combat Logistics Battalion 31 (CLB-31), 31st Marine Expeditionary Unit (MEU), positions students with Marnay Primary School for a group photo, March 5. Marines and sailors with CLB-31 are rebuilding a two-room classroom at Marnay Primary School during exercise Balikatan 2010 (BK ’10). Servicemembers from the Armed Forces of the Philippines (AFP) and the U.S. are working together during BK ’10 to hone their civil-military interoperability skills to ensure more responsive, efficient and effective relief efforts. (Official Marine Corps photo by Lance Cpl. Dengrier M. Baez)::r::::n::