Aug. 11 (UPI) -- A United Launch Alliance Vulcan rocket is gearing up to launch a classified national security payload Tuesday night for the United States Space Force. The ULA Vulcan rocket, which is being prepped for liftoff from Launch Complex 41 at the Cape Canaveral Space Force Station in Florida, will launch the USSF-106 mission into space between 7:59 p.m. and 8:59 p.m. EDT on Tuesday. The Vulcan rocket rolled out to the launch pad earlier Monday, as seen in a ULA post on X. #VulcanRocket