Mound Leveling U.S. Army Pfc. Clayton Sharp levels of the top of a mound in front of the hull-down battle position for an M1A2 Abrams Tank during Exercise Peace Sentinel at Novo Selo Training Center, Bulgaria, Nov. 23, 2015. Sharp is a combat engineer assigned to the 3rd Infantry Division’s 5th Squadron, 7th Cavalry Regiment. U.S. Army photo by Staff Sgt. Steven M. Colvin SHARE: Download: Full Size (1.81 MB) Tags: peace sentinel, operation atlantic resolve, u.s. army, photo essays, bulgaria, nato, combat engineer, novo selo, soldiers, all images Credit: Army Staff Sgt. Steven Colvin VIRIN: 151123-A-HO673-100.JPG Photo Gallery