Naval Air Base San Pedro, NAS Terminal Island was a US Navy World War II 410-acre airfield on Terminal Island in San Pedro, California part of the City of Los Angeles. Before the Navy took control of the airfield, the airstrip was the civilian Allen Field. Allen Field was built in 1927 by filling with sand the Port of Los Angeles and enlarging Terminal Island. Terminal Island is located between San Pedro Harbor and Long Beach Harbor. Allen Field was serviced by the Pacific Electric and pedestrian ferries. The air terminal has three runways in a triangle shape, two short runways and one 4,200 foot runway. A large seaplane ramp was also built at the terminal. A Naval Air Reserve Training Facility was built next to Allen Field in 1927 and used the runway - ramp. Civilian use ended in 1935 and the site began an air base, later renamed Reeves Field San Pedro, after Rear Admiral Joseph M. Reeves. On 25 September 1941 Naval Air Base San Pedro became part of Naval Operating Base Terminal Island. In 1942 many Reserve troops were trained at the Naval Air Base. In 1943 the Navy took over operations and the Reserve was moved to Naval Air Base Los Alamitos. The base was renamed Naval Air Station Terminal Island and continued as a training base until the end of the war in 1945.