Joint Base San Antonio (JBSA) is a United States military facility located in San Antonio, Texas, USA. The facility is under the jurisdiction of the United States Air Force 502d Air Base Wing, Air Education and Training Command (AETC). The wing's three Mission Support Groups perform the installation support mission at the three bases that form JBSA. The facility is a Joint Base of the United States Army Fort Sam Houston, the United States Air Force Randolph Air Force Base and Lackland Air Force Base, which were merged on 1 October 2010.