REFUELING TWINS Two F-15E Strike Eagles wait to receive fuel from a KC-135R Stratotanker during exercise Red Flag 15-1 on their way to Nellis Air Force Base, Nev., Jan. 23, 2015. The F-15s are assigned to the 4th Fighter Wing. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 716540-K-PZN83-721.jpg Photo Gallery