Heavy Rounds Cannon crew members set up an M777 howitzer during a combined arms training exercise at the Yakima Training Center, Yakima, Wash., Feb. 24, 2016. Battlefield commanders use the M777's 155 mm rounds to add an extra dimension to their operations. U.S. Army photo by Sgt. Cody Quinn SHARE: Download: Full Size (1.29 MB) Tags: gunnery, artillery, infantry, stryker, cannon, mount, i corps, joint base lewis-mcchord, 7th id, yakima training center, armor, urban operations, 1-2 sbct, 5-20th inf. reg., mgs, 19k, m77, 1-37 field artillery, training Credit: Sgt. Cody Quinn VIRIN: 160224-A-BX700-024.JPG Photo Gallery