** Nuclear fission

** Enrico Fermi Nuclear Power Plant, in Italy

** Limerick Nuclear Power Plant

** Latina Nuclear Power Plant

** Nuclear reactions

** Nuclear: A runaway nuclear fission or nuclear fusion reaction causes immense energy release.

** The third and final reactor at the Chernobyl Nuclear Power Plant is shut down and the station is shut down completely.

** North Korea nuclear weapons program: North Korea announces that it plans to withdraw from the Nuclear Nonproliferation Treaty and refuses to allow inspectors access to nuclear sites.

** Nuclear testing: In the first underwater test of the atomic bomb, the surplus USS Saratoga is sunk near Bikini Atoll in the Pacific Ocean, when the United States detonates the Baker device during Operation Crossroads.

** Preparatory Commission for the Comprehensive Nuclear Test Ban Organization ( CTBTO ) established.

** Nuclear test: Under Project Smiling Buddha, India successfully detonates its first nuclear weapon, becoming the 6th nation to do so.

** The Nuclear Non-Proliferation Treaty opens for signature.

** Boris Yeltsin announces that Russia will stop targeting cities of the United States and her allies with Nuclear Weapons.

** An experimental Reactor at the Enrico Fermi Nuclear Generating Station suffered a partial meltdown when its cooling system failed.

** Nuclear false alarm: the NORAD computers and the Alternate National Military Command Center in Fort Ritchie, Maryland detected purported massive Soviet nuclear strike.

** Failure of automatic shut-down at Salem Nuclear Power Plant, New Jersey, USA

** The Intermediate-Range Nuclear Forces Treaty is signed in Washington, D. C. by U. S. President Ronald Reagan and Soviet leader Mikhail Gorbachev.

** Nuclear Electromagnetic Pulse ( NEMP ), as a result of a nuclear explosion.

** Nuclear magnetic resonance

** Interview on nuclear strategy in Europe for the WGBH series, War and Peace in the Nuclear Age

** NAS Award for Behavior Research Relevant to the Prevention of Nuclear War

** Salem Nuclear Power Plant

** Nuclear risks and global warming

** Seabrook Nuclear Power Station

** Office of Management Operations

** File and Directory Operations

** Office of the Coordinator for Reconstruction and Stabilization ( integration announced with Bureau of Conflict and Stabilization Operations )

** Bureau of Overseas Buildings Operations

** Alerting and Coordination Network ( ACN )-The Alerting and Coordination Network ( ACN ) provides a stable emergency voice communications network connecting telecommunications service providers ’ Emergency Operations Centers ( EOCs ) and Network Operations Centers ( NOCs ) to support national security and emergency preparedness ( NS / EP ) telecommunications network restoration coordination, transmission of telecommunications requirements and priorities, and incident reporting when the Public Switched Network ( PSN ) is inoperable, stressed or congested.

** Operations research

** Operations ( military staff ), staff involved in planning operations

** Operations room, the tactical center providing processed information for command and control of an area of operations

** Operations management

** Assistant to the President and White House Deputy Chief of Staff for Operations: Alyssa Mastromonaco

** 355th Operations Support Squadron

** 612th Air Operations Group

** 612th Air and Space Operations Center-operates AFSOUTH's Combined Air and Space Operations Center ( CAOC ))

** 563rd Operations Support Squadron

** 943rd Operations Support Flight

** 78th Operations Support Squadron

** Rescue 2 ( Special Operations Unit )

** 91st Operations Support Squadron

** 91st Maintenance Operations Squadron

** Subcommittee on Aviation Operations, Safety, and Security

** Special Operations Center ( TsSN ): Alpha, Vympel, Special Purpose Service

** Subcommittee on State, Foreign Operations, and Related Programs