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.
Photos: United Launch Alliance
Rollback of NROL-55 Vandenberg AFBRollback of NROL-55 Vandenberg AFBRollback of NROL-55 Vandenberg AFBRollback of NROL-55 Vandenberg AFBRollback of NROL-55 Vandenberg AFB
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