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Delta IV mission assurance
Delta IV Mechanical Engineer 2nd Lt. Elizabeth-Ann Bupane of the 5th Space Launch Squadron performs mission assurance observations of a Delta IV booster prior to it moving to the launch pad. The Delta IV lifted off March 4 carrying the NASA/NOAA Geostationary Operational Environmental Satellite P. (U.S. Air Force photo courtesy of Maj. Jeremy Geib)

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