Lt. Col. Lori Bowers, a nurse from the 110th Medical Group, prepares to administer a COVID-19 test at the Alpena Combat Readiness Training Center, Mich., July 19, 2020, during the training exercise Northern Strike. Geared to build readiness and maintain proficiency in air, sea, and ground maneuvers, Northern Strike is an annual, National Guard Bureau-sponsored exercise that draws in units from all active-duty and reserve branches so they can conduct training missions and joint fires integration in a decisive-action environment.(U.S. Air National Guard photo by Staff Sgt. Brian Jarvis)