Master Sgt. Christopher Sheldon, 167th Airlift Wing aircraft mechanic, makes a call on his radio during a full-scale readiness exercise, Nov. 5, 2019. Approximately 300 members of the 167th Airlift Wing deployed to the Combat Readiness Training Center in Alpena, Mich., Nov. 3-7, for the event. (U.S. Air National Guard photo by Senior Master Sgt. Emily Beightol-Deyerle)