Walheim and Tani on FD

S122-E-010922 (18 Feb. 2008) --- Astronaut Rex Walheim (right), STS-122 mission specialist, uses a handheld laser ranging device -- designed to measure the range between two spacecraft -- through one of the overhead windows on the aft flight deck of Space Shuttle Atlantis after undocking from the International Space Station. Astronaut Daniel Tani, mission specialist, uses a still camera to photograph the station in its new configuration.