Mission Control Center
Houston, Texas

STS-135 MCC Status Report No. 22
Monday, July 18, 2011, 9 p.m. CDT

The final space shuttle crew is now just hours away from undocking from the
International Space Station, one more time.

Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandy
Magnus and Rex Walheim began their day at 8:59 p.m. Their wakeup call came
in the form of Coldplay's "Don't Panic," which was played for Hurley.

After 37 space shuttle visits, in which 10 modules, four sets of solar
arrays, 354 feet of truss and countless science experiments -- not to
mention the necessities of day-to-day living in space -- have been
delivered, space shuttle Atlantis will pull away from the space station for
the last time at 1:28 a.m.

Before the crew gets too far away, however, they'll have one more service to
perform for the orbiting laboratory. Hurley will move the shuttle out to a
distance of 600 feet away, and then fly half a loop around the station, so
that Atlantis' astronauts can document once more the product of the space
shuttle fleet's efforts.

Although a fly-around has been performed following undocking for most of the
shuttle missions to the station, this last half lap should provide some new
views. The space station will rotate 90 degrees to give the shuttle crew a
view down its long axis, an angle not normally visible.

The fly-around should be complete by 2:50 a.m., at which point Atlantis'
engines will fire in a series of burns to begin moving it further away from
the space station. The crew on board will spend the second half of its day
inspecting the shuttle's heat shield for any damage it may have received
while in space.

The next status report will be issued at the end of the crew's day or
earlier if warranted. The crew is scheduled to go to sleep just before 1
p.m. on Tuesday.