A soldier scans his sector while manning a machine gun from the top of a tactical vehicle during Exercise Saber Guardian 17 in Turzii, Romania, July 22, 2017. The soldiers are assigned to the 1st Battalion, 143rd Infantry Regiment, 173rd Airborne Brigade. Saber Guardian is a U.S. Army Europe-led, multinational exercise that spans across Bulgaria, Hungary and Romania with more than 25,000 participating troops from 22 allied and partner nations. Army photo by Sgt. David Vermilyea