May 30, 2025 30th LRS supports arrival, training of new Payload Transporter Replacement at Vandenberg SFB The Payload Transporter Replacement (PTR) sits staged for training May 15, 2025, at Vandenberg Space Force Base, Calif. After eight years in development by the Air Force Nuclear Weapons Center, the PTR modernizes the transport, maintenance and sustainment of Aerospace Vehicle Equipment for the