U.S. Air Force Master Sgt. Rick Boyer, a Joint Terminal Attack Controller (JTAC) instructor and scheduler from the 110th Wing, Battle Creek, Michigan, briefs Airmen before an exercise on Aug. 2, 2021, at the Carmeause Lime and Stone Quarry, Rogers City, Michigan, during exercise Northern Strike 21-2. Northern Strike is a joint forces, multi-component, multinational exercise designed to build readiness and enhance interoperability with coalition forces to fight and win. The exercise is leveraging DoD, industry, and academia to improve joint warfighter training capabilities and offset modernization costs. (U.S. Air National Guard photo by Master Sgt. Shelly Stark)