Kennedy Space Center, FL - John Young, right, commander of STS-1, and Robert Crippen,
pilot of the spacecraft, don their helmets, completing the process of "suiting up" for the dry
countdown demonstation test (CDDT) at Launch Pad 39A.  The astronauts are aided by
space suit technicians, left, and the close-out crew, right, from Rockwell International.  The
dry CDDT is the final pre-launch check of countdown and launch procedures for America's
first reusable space transportation system, scheduled for launch no sooner than the week of
April 5.