The 99th Security Forces Squadron is a unit of the United States Air Force responsible for law enforcement, force protection, emergency response, and security operations within the host installation and surrounding air base complex. As part of the Air Force’s Security Forces career field, it operates under Air Combat Command. Its primary mission involves securing and defending assets, resources, and people at Lackland Air Force Base in San Antonio, Texas, ensuring the readiness of Air Education and Training Command forces. The squadron is equipped with various law enforcement vehicles, K-9 teams, tactical equipment, and weapons systems. It upholds a tradition dating back to World War II when it was first activated as the 99th Bombardment Group, making it one of the oldest units in the U.S. Air Force.