U.S. Air Force Staff Sgt. Juan Rojas, 52nd Aircraft Maintenance Squadron avionics specialist, talk with pilots from the 480th Expeditionary Fighter Squadron about his job during Trident Juncture 2018 at Kallax Air Base, Sweden, Oct. 22, 2018. With more than 50,000 participants from 31 nations, this is NATO’s largest exercise since 2015. (U.S. Air Force photo by Staff Sgt. Jonathan Snyder)