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United Launch Alliance (ULA) launched the USSF-51 national security mission for the U.S. Space Force on Tuesday — marking the final national security mission on an Atlas V rocket as ULA transitions to the Vulcan rocket. The Atlas V rocket first launched in March of 2007 and has launched 53 National Security Space (NSS) missions. The Atlas family of rockets originated in the 1950s as the United States’ first intercontinental ballistic missile. The July 30 Atlas V mission lifted off from Cape Canaveral…
