Howitzer Cannon Soldiers fire an M777 A2 howitzer cannon during a live-fire exercise at Fort McCoy, Wis., July 27, 2019. Maneuver and fires are both areas of Defense Department focus for artificial intelligence development. SHARE: Download: Full Size (1.44 MB) Tags: Army Credit: Army Spc. Christopher Brumbelow VIRIN: 190729-A-IT956-1003C.JPG Photo Gallery