Buoyancy tank. View of astronauts Steven K. Robinson (centre left) and Pedro Deque (centre right) training in a buoyancy tank. They being assisted by scuba divers. The astronauts are training for the shuttle Discovery mission STS-95 (29th October-7th November 1998). They are practising manually launching the Spartan-201 satellite in the event of failure of the remote systems. Robinson and Deque were joined on the mission by: Chiaki Naito-Muka, Scott F. Parazy- nski; John H. Glenn; Curtis L. Brown, mission commander; Steven W. Lindsey, pilot. The purposes of this mission were to conduct experiments and launch and retrieve the Spartan satellite.