two were killed in a shooting that took place at Lackland Air Force Base

At least two were killed Friday in a shooting that took place at Lackland Air Force Base in San Antonio, Texas.
US Police said that initial investigations point to an active shooter who killed at least two so far before committing suicide. Police has put the whole facility on lockdown and asked residents near the base to stay in their homes.
CNN reported that Lackland is where the U.S. Air Force conducts its basic training for enlistees. Lackland is one of three major military facilities, the others being Fort Sam Houston and Randolph Air Force Base, that merged to form Joint Base San Antonio in 2010.

Source: QNA