An F-22 Raptor is being refueled by a KC-135 Stratotanker over the Nevada Test and Training Range during the U.S. Air Force Weapons School’s Deliberate Strike Night, June 16, 2016. DSN is part of the final seven-day advanced integration portion of the school’s curriculum, testing stealth and conventional airframes’ abilities to conduct attacks during the hours after the sun sets. The F-22 is assigned to the 433rd Weapons Squadron and the KC-135 is assigned to the 509th Weapons Squadron. (U.S. Air Force photo/Airman 1st Class Kevin Tanenbaum)