Fuji Fire A Marine fires a .50-caliber machine gun during Fuji Viper at Combined Arms Training Center Camp Fuji, Japan, Jan. 13, 2021. The exercise allows infantry units to maintain their lethality and proficiency in infantry and combined arms tactics. SHARE: Download: Full Size (0.77 MB) Tags: FUJI VIPER, training, Marine Corps Credit: Marine Corps Cpl. Savannah Mesimer VIRIN: 210113-M-GB409-441C.JPG Photo Gallery