(07/01/1997) --- STS-94 Payload Commander Janice Voss smiles and gives a thumbs-up as she is assisted into her launch/entry suit in the Operations and Checkout (O&C) Building. She has flown on STS-83, STS-63 and STS-57. Voss holds a doctorate degree in aeronautics/astronautics from the Massachusetts Institute of Technology and has earned two NASA Space Flight Medals. As Payload Commander and a member of the Blue team, Voss will have overall responsibility for the operation of all of the MSL-1 experiments. During the experimentation phase of the mission, she be working primarily with three combustion experiments. She and six fellow crew members will shortly depart the O&C and head for Launch Pad 39A, where the Space Shuttle Columbia will lift off during a launch window that opens at 1:50 p.m. EDT, July 1. The launch window was opened 47 minutes early to improve the opportunity to lift off before Florida summer rain showers reached the space center