Two U.S. Air Force B-1B Lancers fly a bilateral mission with two Koku Jieitai (Japan Air Self-Defense Force) F-15s in the vicinity of the East China Sea, Sept. 9, 2017. Following the end of the operation, one B-1B split off to Misawa Air Base, Japan, to be a static display for the Misawa Air Festival, while the other B-1B returned to Andersen Air Force Base, Guam. The purpose of bilateral training is to foster increased interoperability between Japan and U.S. aircraft. Participating in bilateral training enables the operational units to improve their combined capabilities and tactical skills, while also building bilateral confidence and strong working relationships. (Courtesy Photo)