Navy P-3 Orion out of PaxRiver doing laps over Hagerstown, MD
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Spotted a U2 earlier tonite doing low altitude laps over Beale AFB, N of Sacto Ca on:
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>Beale AFB U2's
From the look of the flight path, likely approach & landing training. They keep a few out there on the flight line. Bing/Goog screencaps:
SAM707 is Oscar Mike - Westbound heading out over the Atlantic from UK