Naval Air Station Whidbey Island (NASWI) is a naval air station located in two sections near Oak Harbor, on Whidbey Island, in Island County, Washington. It was commissioned as an active U.S. Navy installation on 21 September 1942. The main portion of the base is called Ault Field in memory of Commander William B. Ault, who was listed 'missing in action' during the Battle of the Coral Sea (1942). Ault Field is located approximately three miles north of Oak Harbor.