ULA is preparing for the #VulcanRocket Flight Readiness Firing (FRF) to validate the fully integrated vehicle before its inaugural #Cert1 launch from Cape Canaveral Space Force Station, Florida! #CountdowntoVulcan
— ULA (@ulalaunch) May 25, 2023
Learn more about this test: https://t.co/WhedmKhWQj pic.twitter.com/M2cfdUt1io