Romanian air force F-16s fly in formation prior to receiving fuel from a 100th Air Refueling Wing KC-135 Stratotanker from RAF Mildenhall, England, during aerial refueling training over the skies of Romania, March 13, 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)