US Air Base Locked Down by False Alarm

A US air force base was put on lockdown for nearly five hours Friday after a report suggested a gunman was holed up inside the facility, but it turned out to be a false alarm, officials said.
All traffic in and out of the Davis Monthan air base in Tucson, Arizona, was stopped after the "reported sighting of an armed individual entering an office building," said a base statement.
A SWAT team and bomb squad scrambled to the scene, local media said, while at least one nearby school was also on lockdown.
"The base remained in lockdown from approximately 10:30 am until approximately 4:00 pm when a floor-by-floor, room-by-room search of the building in question was completed," said the statement.
But it said: "No gunman or weapons were found. The building was declared secure and an orderly release of personnel followed." And it added. "All reports of threats regarding the safety and security of our Airmen and their families are taken seriously.