Pamela Melroy talks to media and guests on the Shuttle Landing Facility after landing space shuttle Discovery.

STS-120 Commander Pamela Melroy talks to media and guests on the Shuttle Landing Facility at NASA's Kennedy Space Center after landing space shuttle Discovery. Behind her are (from left) mission specialist Stephanie Wilson, Pilot George Zamka and mission specialists Doug Wheelock and Scott Parazynski. The Discovery crew completed the 15-day mission STS-120, with an on-time landing at 1:01:16 p.m. Wheel stop was at 1:02:07 p.m. Mission elapsed time was 15 days, 2 hours, 24 minutes and 2 seconds. Mission STS-120 continued the construction of the station with the installation of the Harmony Node 2 module and the relocation of the P6 truss. Photo credit: NASA/Kim Shiflett