Naval Air Facility Atsugi (厚木海軍飛行場, Atsugi Kaigun-hikōjō) (IATA: NJA, ICAO: RJTA) is a joint Japan-US naval air base located in the cities of Yamato and Ayase in Kanagawa, Japan. It is the largest United States Navy (USN) air base in the Pacific Ocean and once housed the squadrons of Carrier Air Wing Five (CVW-5), which deploys with the aircraft carrier USS Ronald Reagan. During 2017 and 2018 the fixed-wing aircraft of CVW-5 relocated to Marine Corps Air Station Iwakuni in western Japan.