Spaceflight Insider Matt Haskell February 13th, 2021 United Launch Alliance’s Vulcan rocket pathfinder test article was driven onto Cape Canaveral Space Force Station this morning, following its recent arrival by sea, aboard RS RocketShip. Image: Matt Haskell, Spaceflight Insider Progress continues to advance for United Launch Alliance’s newest rocket, as the pathfinder for the Vulcan rocket arrived by the company’s cargo ship and was unloaded at Cape Canaveral Space Force Station on Saturday, February 15. A nearly flight capable booster, the Pathfinder Tanking Test (PTT) booster will be utilized for checkouts of the new rocket’s Ground Support Equipment, as well as launch and integration hardware. While visiting the pad, the PTT will also undergo a full cryogenic tanking test to verify the booster’s flight pressure integrity. While the booster is currently fitted with static fired test engines that are no longer flight capable, according to ULA CEO Tory Bruno, the PTT Booster itself will eventually fly next year, following a refit to flight engines.