U.S. Air Force Capt. Clayton Barrus, a pilot assigned to the 909th Air Refueling Squadron, Kadena Air Base, Japan, smiles at Staff Sgt. Adrian Pinnock, a flying crew chief assigned to the 909th Air Refueling Squadron, Kadena Air Base, Japan, before taking off in a KC-135 Stratotanker during Exercise Cope North 20 at Andersen Air Force Base, Guam, Feb. 13, 2020. Cope North 20 is an annual trilateral field training exercise conducted at Andersen Air Force Base, Guam, and around the Commonwealth of the Northern Mariana Islands (CNMI), Palau, and Yap in the Federated States of Micronesia.