STS-55 SL-D2 crew, in LESs, rehearse launch procedures during TCDT at KSC

S93-29851 (12 Feb 1993) --- Clad in their bright orange launch/entry suits, the STS-55 flight crew departs the Operations and Checkout Building for the Space Shuttle Columbia at Launch Pad 39A. Leading the way are Pilot Terence T. Henricks (left) and Mission Commander Steven R. Nagel; behind them are, from left, Mission Specialists Charles J. Precourt and Bernard A. Harris Jr.; Payload Commander Jerry L. Ross; and Payload Specialists Ulrich Walter and Hans Schlegel. This is the final portion of the Terminal Countdown Demonstration Test, a dress rehearsal for launch which culminates with a simulated T -0.