The lockdown at JBSA-Lackland was lifted approximately one hour after officials received reports of shots fired near the western side of the US military installation.
Lt. Col. Brian Loveless, commander of the 802nd Security Forces Squadron, told reporters Wednesday that investigators are still attempting to figure out whether the incident was credible, or a false alarm.
Loveless said that around noon security forces received a report about two gunshots fired at the base from an off-base location. He said they have received no reports of people witnessing any gunshots fired at the base.
"We’re trying to investigate a couple of leads right now to confirm that gunshots actually did take place on the installation," Loveless said.
No injuries were reported, and members of the San Antonio Police Department are handling the investigation.
"There’s a lot of facilities on this installation that are very important to the Air Force. I would rather overreact (to a gunfire report) than underreact," the commander said.
"Our response was perfect," Loveless added.
Joint Base San Antonio is the largest joint base of the US Department of Defense. It is used, among other things, for the training of soldiers of the National Guard and officers of the American army.