This Day in Naval History – March 15
1943 - Numbered fleet system established
1947 - Ensign John W. Lee becomes first African American officer commissioned in regular Navy. He was assigned to USS Kearsage.
1957 - Airship ZPG-2 lands NAS Key West after 11 day non-stop flight across the Atlantic
1966 - Establishment of River Squadron Five in Vietnam
(Source: Navy News Service)