United States Navy Boeing E-6B Mercury of Strategic Communications Wing ONE, Task Group 114.2, based at Tinker Air Force Base, Oklahoma, high over Colorado Aug. 23, 2019. The E-6B was refueled by a Boeing KC-135R Stratotanker of the 507th Air Refueling Wing, Air Force Reserve Command, also from Tinker AFB. (U.S. Air Force photo/Greg L. Davis)