Cape Canaveral Air Force Station the tower is rolled back to reveal the TDRS-J satellite aboard an Atlas IIA vehicle awaiting launch.

At Launch Complex 36-A, Cape Canaveral Air Force Station, the mobile service tower is rolled back to reveal the encapsulated TDRS-J satellite aboard an Atlas IIA vehicle awaiting launch on Dec. 4. The launch window is 9:42 to 10:22 p.m. EST. TDRS-J, the third in a series of telemetry satellites, will help replenish the current constellation of geosynchronous TDRS satellites that are the primary source of space-to-ground voice, data and telemetry for the Space Shuttle. The satellites also provide communications with the International Space Station and scientific spacecraft in low-Earth orbit such as the Hubble Space Telescope. This new advanced series of satellites will extend the availability of TDRS communications services until about 2017.