U.S. Marines with 1st Battalion, 3rd Marine Regiment (1/3), conduct live grenade training during exercise Fuji Viper 16-3 on Camp Fuji, Fuji, Japan. Feb 11, 2016. The Marines of 1/3 conducted live-fire training to sustain their proficiency in combat operations. Fuji Viper 16-3 is a training exercise where Marines and Sailors conduct live fire and non-live fire combined arms training in order to sustain combat proficiency to support contingency operations in the U.S. Pacific Command area of operations (U.S. Marine Corps Motion imagery by MCIPAC Combat Camera Lance Cpl. Cody Hastings Shepard/Released)