U.S. Air Force Capt. Christopher Cruz, a pilot assigned to the 61st Airlift Squadron, performs preflight checks on a U.S. Air Force C-130J Super Hercules assigned to the 19th Airlift Wing at Alpena Combat Readiness Training Center, Michigan, May 22, 2021. Mobility Guardian accelerates change for the Air Force by exercising innovative concepts such as Agile Combat Employment, Multi-Capable Airmen, Contested Air Base Opening, Joint All-Domain Command and Control, Mission Type Orders and Strategic Deterrence. (U.S. Air Force photo by Staff Sgt. Joseph Pick)