The STS-121 crew gets a close look at the underside of the orbiter Discovery after landing.

The STS-121 crew gets a close look at the underside of the orbiter Discovery after landing. Seen are (from left) Mission Specialist Stephanie Wilson, Commander Steven Lindsey and Mission Specialists Lisa Nowak and Michael Fossum. The post-flight walk-around is a tradition. Discovery's smooth and perfect landing was on time at 9:14 a.m. EDT on Runway 15 of NASA's Shuttle Landing Facility after traveling 5.3 million miles on 202 orbits. Mission elapsed time was 12 days, 18 hours, 37 minutes and 54 seconds. The landing is the 62nd at Kennedy Space Center and the 32nd for Discovery. Photo credit: NASA/Kim Shiflett