. . . "1956"^^ . "preparing to launch a Regulus II missile"@en . . . . . . . "The SSM-N-9 Regulus II cruise missile was a supersonic guided missile armed with a nuclear warhead, intended for launching from surface ships and submarines of the U.S. Navy (USN)."@en . . . . . "Cruise missile"@en . "M 2.0"@en . . . "1"^^ . "SSG and SSGN class submarines, cruisers"@en . "Inertial"@en . . "air burst or surface burst"@en . "yes"@en . . "The SSM-N-9 Regulus II cruise missile was a supersonic guided missile armed with a nuclear warhead, intended for launching from surface ships and submarines of the U.S. Navy (USN)."@en . "SSM-N-9 Regulus II"@en . . "SSM-N-9 Regulus II"@en . "+"@en .