STS116-S-079 (22 Dec. 2006) --- David Mould (left), NASA assistant administrator for Public Affairs, Jim Kennedy (center), director of Kennedy Space Center and Michael Griffin, NASA administrator, follow the Space Shuttle Discovery as it approaches Runway 15 at the Shuttle Landing Facility. The STS-116 crew completed its mission at 5:32 p.m. (EST), Dec. 22. (Photo credit: NASA/Bill Ingalls)