Gen. Paul J. Selva, 10th Vice Chairman of the Joint Chiefs of Staff, speaks during a welcoming ceremony for the delivery of the third and fourth KC-46A Pegasus aircraft at McConnell Air Force Base, Kan., Jan. 31, 2019. Global air refueling is the foundation of global mobility and the bedrock of the nation’s ability to deploy forces. The KC-46 is the newest aircraft in the Air Force’s strategic arsenal, and it will operate along with the KC-135 Stratotanker and the KC-10 Extender. (U.S. Air Force photo by Staff Sgt. David Bernal Del Agua)