Combined arms live fire rehearsal, Exercise Bright Star 2017
Army Sgt. Maj. John Lucas, 2nd Battalion, 7th Cavalry Regiment, 3rd Armored Brigade Combat Team, 1st Cavalry Division senior enlisted advisor, communicates with tank crews at a combined arms live fire exercise (CALFEX) rehearsal during Exercise Bright Star 2017. Bright Star is a combined command-post and field training exercise aimed at enhancing regional security and stability by responding to modern day security scenarios with the Arab Republic of Egypt. (U.S. Department of Defense photo by Tom Gagnier)