These images show U.S. warplanes flying in international airspace east of North Korea. A fully-armed U.S. Air Force F-15 Eagle is pictured receiving fuel from a KC-135 Statotanker over the Pacific Ocean, Sept. 23, 2017. Through air refueling operations, U.S. Air Force and allied aircraft have the capability to eliminate threats and promote security across the Indo-Asia-Pacific region. When: 23 Sep 2017 Credit: USAF/Cover Images **Editorial use only**