Leaders from participating nations render honors for the host nations' national anthems during the opening ceremony for exercise Saber Guardian 17 at Novo Selo Training Area, Bulgaria, July 11, 2017. Saber Guardian is a U.S. Army Europe-led, multinational exercise that spans across Bulgaria, Hungary, and Romania with more than 25,000 service members 22 allied and partner nations. Army photo by Spc. Jada Owens