In Firing Room 4 of the Launch Control Center congratulates the launch team after the launch of Space Shuttle Discovery.

In Firing Room 4 of the Launch Control Center, Shuttle Launch Director Mike Leinbach (center) congratulates the launch team after the successful launch of Space Shuttle Discovery on mission STS-121. The launch was the first ever to take place on Independence Day. At far right is Center Director Jim Kennedy. During the 12-day mission, the STS-121 crew of seven will test new equipment and procedures to improve shuttle safety, as well as deliver supplies and make repairs to the International Space Station. Landing is scheduled for July 16 or 17 at Kennedy's Shuttle Landing Facility. Photo credit: NASA/Kim Shiflett