1845 - The Naval School, later the Naval Academy, opens in Annapolis, Md., with 50 midshipmen and seven faculty.
1923 - First American-built rigid airship, Shenandoah, is christened. It used helium gas instead of hydrogen.
1944 - The Leyte campaign begins with the attack of four carrier task groups of Task Force 38 on Okinawa and Ryukyus.
1960 - Navy assigned responsibility for program management and technial direction of Project SPASUR, the first U.S. universal satellite detection and tracking network.
1985 - Fighters from USS Saratoga (CV 60) force an Egyptian airliner, with the hijackers of the cruise ship Achille Lauro aboard, to Italy, where the hijackers were taken into custody.
2013 - Secretary of the Navy Ray Mabus announced the establishment of the Washington Navy Yard Recovery Task Force. It assumed the responsibility of actions assigned to the Emergency Family Support Task Force established Sept. 16, 2013, following the shooting deaths of 12 people there.