The final flight of Space Shuttle Discovery seen from the ET-Cam mounted near the top of its fuel tank. Mission STS-133 lifted off from the Kennedy Space Center on February 24, 2011. (Membership required)

The mission will focus on proving the reusability of the rocket and not on additional flight objectives, like operating the payload bay door or reigniting the vacuum engines on the Ship upper stage. The June 5 launch window opens at 7 a.m. CDT (8 a.m. EDT (1200 UTC).

Narrated animation explains the United Launch Alliance Delta 4-Heavy rocket ascending to space with the NROL-37 mission for the National Reconnaissance Office through T+plus 6 minutes, 30 seconds before going into a news blackout.