U.S. Air Force Staff Sgt. <PERSON>, 100th Aircraft Maintenance Squadron flying crew chief, preps a KC-135 Stratotanker from RAF Mildenhall during training with Romanian air force F-16s in Bucharest, Romania, March 12, 2019. The crew was involved in training with Romanian air force F-16s over the skies of Romania, which enhanced regional capabilities to secure air sovereignty and promote peace and security through cooperation, collaboration, interoperability with NATO allies in the region. (U.S. Air Force photo by <PERSON> <PERSON>)