EntityQ7249082· pop 5· linked from 22 articlesProject ExcaliburSign in to saveAnti-missile system using x-ray laser powered by a nuclear bombConnectionsnuclear weaponEntityUnited States National Security CouncilEntitysubmarine-launched ballistic missileEntityinfrared homingEntityGeorge Chapline, Jr.EntityWilliam BroadEntityUnited StatesCountryKazakhstanCountryMoscowCityRonald ReaganPersonoxygenEntityBill ClintonPersonCold WarEntityaluminiumEntitycancerEntityMikhail GorbachevEntityvirusEntityberylliumEntitycalciumEntityquantum mechanicsEntityCategoriesAnti-ballistic weaponsCold War weapons of the United StatesDirected-energy weaponsNuclear weapons program of the United StatesStrategic Defense Initiative