April 28, 2017

Video: Liftoff of Atlas 5 on NROL-55

October 8, 2015

A replay of the United Launch Alliance Atlas 5 rocket launching the classified NROL-55 payload for the National Reconnaissance Office from Vandenberg Air Force Base, California.

Photos: Gantry retracted from Atlas 5 rocket

October 8, 2015

The 8-million-pound mobile service tower is retracted from around the Atlas 5 rocket, revealing the 19-story-tall vehicle for liftoff from Vandenberg Air Force Base, California, on NROL-55.

Live coverage: Atlas 5 countdown and launch journal

October 7, 2015

A United Launch Alliance Atlas 5 rocket blasted off from Vandenberg Air Force Base in California at 5:49 a.m. local time (8:49 a.m. EDT; 1249 GMT) Thursday on the classified National Reconnaissance Office NROL-55 mission.

Photos: NROL-55 payload joins Atlas booster rocket for launch

October 4, 2015

This photo gallery shows the classified National Reconnaissance Office payload, already encapsulated in the 14-foot-diameter nose cone, being lifted atop the United Launch Alliance Atlas-Centaur rocket at Vandenberg Air Force Base for liftoff Oct. 8.

Record-setting Atlas launches with new Centaur engine

December 13, 2014

A United Launch Alliance Atlas 5 rocket put on a display of power, sound and light Friday evening at Vandenberg Air Force Base in launching a clandestine national security payload, then successfully debuted a new upper stage engine as it flew over the horizon.

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