UPDATE: A Navy spokesperson says those lights seen in the sky tonight are flares. An aircraft squadron is performing "flare training" about 30 miles off the coast of San Diego. The lights might be seen intermittently through Thursday night, when the drills are expected to end.
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CBS 8 reported that the flares were specifically from Squadron VMGR-325 (a.k.a. “The Raiders”) or the Marine Aerial Refueler Transport Squadron 352, part of the 3rd Marine Aircraft Wing based at nearby Marine Corps Air Station Miramar.