This Day in Naval History - Sept. 20

From the Navy News Service

1911 - Navigational instruments first requested for naval aircraft.

1951 - In Operation Summit, the first combat helicopter landing in history, U.S. Marines were landed in Korea.

1981 - USS Mount Hood (AE 29) and Navy helicopters rescue 18 crew members of Philippine Navy frigate, Datu Kalantiaw.

For more information about naval history, visit the Naval Historical Center Web site at www.history.navy.mil.