ULA's Vulcan is replacing the company's workhorse Atlas 5 rocket and the already-retired Delta 4 family of launchers.

The United Launch Alliance successfully launched a Vulcan Centaur rocket into orbit from Cape Canaveral Space Force Station in Florida on Tuesday. The mission delivered classified payloads, as well as a Navigation Technology Satellite-3 system,

United Launch Alliance completed its first US national security mission with the newly developed Vulcan rocket, a key test of the vehicle’s ability to put satellites into high orbits above the Earth.