Discovery STS-133 Mission Landing

NASA Administrator Charles Bolden, right, and NASA Executive Officer to the Deputy Administrator Garvey McIntosh scan the sky for the space shuttle Discovery as it approaches for landing from its 39th and final flight at the Kennedy Space Center in Cape Canaveral, Fla., Wednesday, March 9, 2011. Since 1984, Discovery flew 39 missions, spent 365 days in space, orbited Earth 5,830 times and traveled 148,221,675 miles. Photo credit: (NASA/Bill Ingalls)