The United Launch Alliance Delta IV launches with a National Reconnaissance Office payload at Space Launch Complex-37 at 6:38 p.m. EST. The Delta IV is 211-feet tall and has more than one million pounds of thrust at liftoff.This is the third launch of the year for ULA. NROL-27 is the seventh flight of the Delta IV Medium+ (4,2) configuration and the 16th flight of the Delta IV family of launch vehicles. (Courtesy Photo by Pat Corkery, United Launch Alliance)
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