A U.S. Air Force F-15E Strike Eagle, assigned to the 4th Fighter Wing, Seymour Johnson Air Force Base, North Carolina, and a U.S. Air Force F-35A Lightning II assigned to the 388th Fighter Wing, Hill Air Force Base, Utah, fly side-by-side behind a KC-135 Stratotanker assigned to the 351st Air Refueling Squadron, RAF Mildenhall, England, during Operation Rapid Forge over Germany, July 23, 2019. Rapid Forge is a U.S. Air Forces in Europe-sponsored training event designed to enhance interoperability with NATO allies and partners, improve readiness and sharpen operational capabilities. (U.S. Air Force photo by Tech. Sgt. Emerson Nuñez)