Staff Sgt. Mark Murray, 372nd Training Squadron, Detachment 27 RQ-4 tactical field terminal instructor, teaches a class on the four types of satellite orbits April 2, 2014, at Grand Forks Air Force Base, N.D. Murray completed a course on satellite, wideband and telemetry systems by attending technical school training at Keesler Air Force Base, Miss., and Fort Gordon, Ga. He has more than five years of active-duty service in the Air Force. (U.S. Air Force photo/Staff Sgt. Luis Loza Gutierrez)
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