Having quickly changed into his uniform Scott sits at the controls of TB1 carrying out pre-flight checks as the craft is carried down to the Launch Bay on a computer-controlled trolley. TB1 emerges from the tunnel to the Launch Bay located under the swimming pool in front of the Tracy Villa. The trolley comes to a halt over the Exhaust Blast Pit, and a brief automated countdown begins. The swimming pool, concealing the entrance to the Launch Bay, slides under the patio and Thunderbird 1 blasts off.