NASA STS-130 Pilot Terry Virts, right, is interviewed by Mid-Atlantic Sports Network (MASN) reporter Debbie Taylor at Nationals Park Tuesday, April 20, 2010, in Washington. Photo Credit: (NASA/Carla Cioffi)

NASA STS-130 Pilot Terry Virts throws the opening pitch at Nationals Park on Tuesday, April 20, 2010, in Washington. Photo Credit: (Courtesy of the Washington Nationals)

NASA STS-130 Pilot Terry Virts, center, is interviewed by Washington Nationals radio broadcasters Charlie Slowes, right, and David Jageler on Tuesday, April 20, 2010, in Washington. Photo Credit: (NASA/Carla Cioffi)

NASA STS-130 crew pose with Winter Olympics medalist Apolo Ohno, center, at Nationals Park, Tuesday, April 20, 2010, in Washington. Pictured from left are STS-130 Mission Specialist Robert Benhken, Mission Specialist Nicholas Patrick, Commander George Zamka, Apolo Ohno, Mission Specialist Stephen Robinson, Mission Specialist Kathryn Hire and Pilot Terry Virts. Photo Credit: (NASA/Carla Cioffi)

NASA STS-130 crew Commander George Zamka, far left, Pilot Terry Virts, Mission Specialists Kathryn Hire, Stephen Robinson, Nicholas Patrick and Robert Behnken, far right, pose for pictures on the field at Nationals Park, Tuesday, April 20, 2010, in Washington. Photo Credit: (NASA/Carla Cioffi)

The crew of STS-130 present the principal owner of the Washington Nationals, Debra Lerner Cohen (holding montage) with a montage of their mission, Tuesday, April 20, 2010 at Nationals Park in Washington. From left are seen Commander George Zamka, Mission Specialist Nicholas Patrick, Pilot Terry Virts, Debra Lerner Cohen, Edward Cohen, Mission Specialist Kathryn Hire, Mission Specialist Robert Behnken, Lauren Lerner, Jacob Lerner and Alan Gottlieb. Photo Credit: (NASA/Carla Cioffi)