A United Launch Alliance Vulcan rocket is gearing up to carry a classified national security payload into space Tuesday night for the United States Space Force.

A United Launch Alliance Vulcan rocket is gearing up to carry a classified national security payload into space Tuesday night for the United States Space Force.

This will be the first national security mission to fly on United Launch Alliance’s Vulcan rocket.

United Launch Alliance's Vulcan Centaur lifted off for the third time ever in an experimental launch to put navigation satellite in orbit