AFRL workers make necessary adjustments before lifting the USET turbo pump with a crane to attach it to AFRL's 2A rocket test stand. The USET turbo pump produces about 4,000 horsepower and will propel the upper stage portion of a rocket into space once the lower stage booster is detached. (U.S. Air Force photo/Kenji Thuloweit)

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Photo by: Kenji Thuloweit |  VIRIN: 100908-F-3438T-003.JPG