Launch of Delta IV NROL-49, Vandenberg AFB, California. January 20, 2011

A United Launch Alliance Delta IV Heavy launches with a National Reconnaissance Office payload at Space Launch Complex-6 at 1:10 p.m. PST. The Delta IV Heavy is the largest rocket ever launched from the west coast of the U.S. standing 235 feet tall and producing nearly 2 millions pounds of thrust at liftoff. The Delta IV Heavy is America’s most powerful liquid fueled rocket. This was the fifth launch of a Delta IV heavy in program history. (Photo by: Pat Corkery)

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