U.S. Air Force Staff Sgt. David Green, 321sr Contingency Response Squadron-aircraft maintainer, marshals a Royal Air Force A400M Atlas aircraft during exercise Green Flag Little Rock, Oct. 24, 2019, Alexandria International Airport, Louisiana. The exercise also gave Airmen a unique opportunity to enhance partnerships with joint and allied partners. (U.S. Air Force photo by Tech. Sgt. Liliana Moreno)