Photos: San Diego Navy medical center

Emergency vehicles arrive at the Naval Medical Center San Diego, Tuesday, Jan. 26, 2016, in San Diego. The Navy said authorities responded to a report of gunshots at a building on the campus.

Traffic backs up as emergency vehicles arrive at the Naval Medical Center San Diego, Tuesday, Jan. 26, 2016, in San Diego. The Navy said authorities responded to a report of gunshots at a building on the campus.

Military officers direct traffic outside of the Naval Medical Center San Diego, Tuesday, Jan. 26, 2016, in San Diego. The Navy said authorities responded to a report of gunshots at a building on the campus.

Building 26 on the Naval Medical Center campus where gunshots were reported is seen Tuesday, Jan. 26, 2016, in San Diego.

Law enforcement direct traffic near the Naval Medical Center in San Diego following a report of gunshots at a building on the campus of the complex, Tuesday, Jan. 26, 2016.

A California Highway Patrol officer mans the scene at the west entrance to the hospital at the Naval Medical Center San Diego while responding to a report of gunshots at a building on the campus of the complex, Tuesday, Jan. 26, 2016, in San Diego.

Law enforcement personnel respond to reports of an active shooter at Building 26 at the Naval Medical Center San Diego on Monday morning.

Cars turn around at the west gate of the Naval Medical Center. Building 26, where an active shooter was reported, is seen in the background.

Security is seen on the west side of Naval Medical Center San Diego in Balboa Park.

People who were evacutated from the naval base in San Diego wait near the west entrance to the hospital.

Security is set up on the west side of Naval Medical Center San Diego in Balboa Park.