Texas Cryptology Center

The United States National Security Agency has a satellite campus at the Medina Annex, Lackland Air Force Base, San Antonio, Texas, which some in the media have called the Texas Cryptology Center. It is adjacent to the former Medina National Stockpile Site.

This site was formerly known as the Medina Regional SIGINT Operations Center (RSOC), which includes the Regional Technical Control and Analysis Element (TCAE). The Medina RSOC was known to house 2200 Army, Marine Corps, Navy, Air Force and civilian Department of Defense employees, including two squadrons of the 70th Intelligence Wing -- the 543rd Support Squadron and the 93rd Intelligence Squadron.

In 2005 the NSA leased a nearby defunct chip plant from Sony at Loop 410 and Military Drive and announced plans to more than double the number of employees over the next 2-3 years. The NSA has completed the construction of a new Data Storage Complex on the old Sony plant grounds as of June 2010, but the current employee count remains classified and unannounced.