Howitzer Haze Marine Corps Lance Cpls. Mauricio Tinoco, right, and Isabel Rodriguez prepare to rig an M777A2 155 mm howitzer during a weapons and tactics instructor course at Chocolate Mountain Aerial Gunnery Range, Calif., April 3, 2021. SHARE: Download: Full Size (0.17 MB) Tags: Marine Corps, Training Credit: Marine Corps Cpl. KarlHendrix Aliten VIRIN: 210403-M-MQ524-0151C.JPG Photo Gallery