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MEDIA UPDATE: United Launch Alliance STP-3 Mission Update

(Cape Canaveral Space Force Station, Fla., June 4, 2021) – The launch of a United Launch Alliance Atlas V 551 rocket carrying the STP-3 mission for the U.S. Space Force’s Space and Missile Systems Center (SMC) has been delayed to evaluate launch vehicle readiness. We are working with our customer to determine the next available launch opportunity.