National Defence College, India | Cuban Missile Crisis | National Defence Academy | Australian Defence Force | Cuban missile crisis | cruise missile | Ulster Defence Association | surface-to-air missile | National Defence College | National Defence Academy (India) | missile | coastal defence ship | White Sands Missile Range | Secretary of State for Defence | Ballistic Research Laboratory | Uganda People's Defence Force | Surface-to-air missile | Defence Science and Technology Organisation | Australian Defence Force Academy | United States Army Aviation and Missile Command | Missile Command | Jane's Defence Weekly | guided missile | BGM-109G Ground Launched Cruise Missile | Harpoon (missile) | Defence League | Croatian Defence Council | Botswana Defence Force | Strategic Defence Review | Space and Missile Systems Center |
Project Excalibur was a United States government nuclear weapons research program to develop a nuclear pumped x-ray laser as a directed energy weapon for ballistic missile defence.