HOWITZER ROUNDS U.S. Army Pvt. Darrell Futrell lifts a 155mm round weighing about 100 pounds on Camp Atterbury Joint Maneuver Training Center in central Indiana, Nov. 4, 2010. Futrell and soldiers assigned to his Indiana National Guard unit fired the round from an M777 Howitzer, which was recently issued to the Indiana Guard. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 128456-Z-ASQ91-510.jpg Photo Gallery