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.

The 202-foot (61-meter) Vulcan Centaur has made two successful flights thus far. The rocket's first flight in January 2024 saw Vulcan launch Astrobotic's Peregrine lunar lander toward the moon — only for the lander to suffer an anomaly and fall back to Earth through no fault of the rocket.