The low-altitude flights are happening through Wednesday, and they are being done to measure expected background radiation ...
Straight Arrow News on MSN
Why a low-flying radiation helicopter is circling the San Francisco Bay
A low-flying NNSA helicopter is flying over the San Francisco Bay Area to measure background radiation levels ahead of Super ...
A mysterious helicopter spotted flying super low around the Bay Area turns out to be Super Bowl related. Consumer Investigator Chris Chmura spotted the helicopter flying back and forth over downtown ...
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