An M2 Bradley assigned to Company A, 1st Battalion, 18th Infantry Regiment, 2nd Armored Brigade Combat Team, 1st Infantry Division, Fort Riley, Kansas, traverses muddy terrain after successfully completing crew qualifications at the Novo Selo Training Area, Bulgaria, on March 20, 2018. The Bradley gunnery conducted certifies that each team is fully qualified to operate as one in a combat situation. (U.S. Army photo by Staff Sgt. Matthew Keeler / 22nd Mobile Public Affairs Detachment)