California air base under lockdown, 'shelter in place' orders

(Reuters) - A false alarm triggered a security lockdown for about two hours at Travis Air Force Base in northern California on Wednesday in response to erroneous reports of gunfire, base officials said.

A notice was first posted to official social media accounts of the base at about 3:30 p.m. local time (2330 GMT), reporting that the installation was "responding to a real world security incident," though no details about the nature of the threat were initially provided.