CAPE CANAVERAL, FL - MARCH 31: (L-R), Mission Specialist Michael Fincke, European Space Agency astronaut Roberto Vittori, Mission Specialist Andrew Feustel and Mission Specialist Greg Chamitoff ... more 
CAPE CANAVERAL, FL - MARCH 31: (L-R), Mission Specialist Michael Fincke, European Space Agency astronaut Roberto Vittori, Mission Specialist Andrew Feustel and Mission Specialist Greg Chamitoff participate in a media availability while attending a 4 day Terminal Countdown Demonstration Test (TCDT), at Kennedy Space Spacecraft Center, on March 31, 2011 in Cape Canaveral, Florida. The TCDT will culminate in a full dress rehearsal for the planned April 19th launch of Space Shuttle Endeavour’s final scheduled flight to the International Space Station before being retired. (Photo by Mark Wilson/Getty Images) less 
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Getty Images | Photo By Mark Wilson / Getty Images
Thu, Mar 31, 2011 10:02 AM EDT