Video: Liftoff of Atlas 5 and MUOS 5 for the Navy and rest of U.S. military

Relive Tuesday night’s spectactular liftoff of the United Launch Alliance Atlas 5 rocket carrying the Cygnus cargo ship with this series of replays.

Several NASA astronauts, plus Boeing test pilot Chris Ferguson, recently participated in a training session at Cape Canaveral, practicing how they would evacuate from the Atlas 5 rocket’s launch pad in the event of a countdown emergency.

A top secret surveillance payload owned by the National Reconnaissance Office soared into space Saturday from Vandenberg Air Force Base in California on top of a United Launch Alliance Delta 4-Heavy rocket, entering an unusual orbit not previously used by the U.S. government’s spy satellite fleet.