"Travis Air Force Base emergency personnel responded to reports of gunshots at the Base Exchange.
The public is being asked to stay away from the base to ensure emergency responders can respond accordingly".
According to sources, a call about an active shooter from the base was a false alarm.
On 14 June 2017, reports of an active shooter at Travis Air Force Base turned out to be a false alarm, a spokeswoman for the base told us.
The lockdown came the same day that the base had been planning security lockdown exercises.
The base tweeted that a security alert is in place and said to shelter in place, locking doors and windows. Additionally, there have been three small brush fires both inside and outside the fencing area near Ritidian and the main gate.
The base is located 45 miles northeast of San Francisco and has a population of over 26,000 people.
Fairfield Police say they are not responding to the incident and are deferring to the base. "The base is no longer on lockdown". Await further info. Follow Travis Facebook page for updates.
No other information was immediately released.