U.S. Air Force Staff Sgt. Shannon Nations, 100th Aircraft Maintenance Squadron flying crew chief, preps a KC-135 Stratotanker from RAF Mildenhall prior to take-off for refueling training with Romanian air force F-16s in Bucharest, Romania, March 12, 2019. The training was an example of U.S. and NATO allies sharing a commitment to promote peace and stability through developing their relationship and communication process. (U.S. Air Force photo by Airman 1st Class Brandon Esau)