A low-flying NNSA helicopter is flying over the San Francisco Bay Area to measure background radiation levels ahead of Super ...

The National Nuclear Security Administration said it's part of normal protocol.

The low-altitude flights are happening through Wednesday, and they are being done to measure expected background radiation ...

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 ...

Helicopters with the the U.S. Department of Energy’s National Nuclear Security Administration will fly at low altitudes around the Bay Area between Feb. 2 and Feb. 4 in preparation of Super Bowl LX at ...

Low-flying warplanes and helicopters rattling windows over South Florida have become more than a passing curiosity. For residents from Broward County to Palm Beach County, the roar of engines skimming ...

Dean Fioresi is a web producer for CBS Los Angeles. He covers breaking news throughout Southern California. When he's not writing about local events, he enjoys focusing on sports and entertainment. A ...

North Haven residents may have noticed a low-flying helicopter in the area near the new Amazon Fullfilment Center off of Route 5 on Saturday; but first responders say there is no need for concern.

Residents in parts of Sandwich and West Barnstable may see or hear a low-flying helicopter starting early on Tuesday and continuing on Wednesday, or possibly Thursday, as part of work Eversource is ...

Residents in Collin County may see low-flying helicopters and increased police activity over the next three nights as the Texas Department of Public Safety holds "real-world" training exercises in ...