At least two people were killed at Lackland Air Force Base in San Antonio on Friday (April 8), the Bexar County Sheriff's Office said. <br /> <br />The sheriff's office had responded to reports of a shooter at the base. Deputies from the county that includes San Antonio were inside the base and the scene was still active, the office said in a tweet. <br /> <br />Parts of the base were placed on lockdown, including three schools, the sheriff's office said. <br /> <br />Military police and sheriff's deputies were clearing out buildings. Authorities also ordered people at a nearby industrial complex to stay in their buildings.