NSGA Medina

Naval Security Group Activity (NSGA) Medina was a United States Navy signals intelligence (SIGINT) unit located at the Medina Annex of Lackland Air Force Base in San Antonio, Texas. Established in the 1960s, NSGA Medina played a vital role in cryptologic training and operations, supporting national security objectives during the Cold War and beyond. The unit specialized in electronic warfare, communications interception, and cryptologic analysis, training thousands of Navy personnel in these critical skills. NSGA Medina was decommissioned in September 2005 as part of a larger realignment and consolidation of Navy cryptologic activities.