An Arizona Air National Guard MQ-9 Reaper parks on the flight line at the Alpena Combat Readiness Training Center, Mich., as its crew prepares to participate in exercise Northern Strike 21-2, Aug. 5, 2021. Northern Strike is a National Guard Bureau-sponsored exercise bringing together more than 5,100 participants from various states and countries to the National All-Domain Warfighting Center. (U.S. Air National Guard photo by Staff Sgt. Jay Grabiec)