U.S. Marine Corps Gunnery Sgt. Leo Salinas, a combat correspondent with III Marine Expeditionary Force (MEF) Public Affairs, prepares his gas mask at Yokota Air Base in Tokyo, Japan, March 14, 2011. U.S. Service members assisted Japanese residents with disaster relief efforts in support of Operation Tomodachi after a magnitude 9.0 earthquake and tsunami struck Japan March 11.