Staff Sgt. Sam Salcedo, a tactical air control party specialist with the 146th Air Support Operations Squadron in Oklahoma City, coordinates with the Poland 18th Airborne Battalion ground commander before a live-fire exercise while training at Northern Strike 17 at Camp Grayling, Michigan, Aug. 8, 2017. Tactical air control party specialists with the 146 ASOS provided close air support during the integrated scenario. (U.S. Air National Guard photo by Senior Airman Tyler Woodward)