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Pilots on an E-3 Sentry Airborne Warning and Control aircraft check gauges while flying above Alaska, during a surveillance training mission Sept. 20, 2017. Reservists from the 970th Airborne Air Control Squadron based at Tinker Air Force Base, Okla., visited Joint Base Elmendorf-Richardson for a nine-day total force mission where they fully integrated with the active-duty 962nd AACS.