The United States National Security Agency

National Security Agency

The National Security Agency/Central Security Service is a cryptologic intelligence agency of the United States Department of Defense responsible for the collection and analysis of foreign communications and foreign signals intelligence, as well as protecting U.S...

  has a satellite campus at the Medina Annex, Lackland Air Force Base

Lackland Air Force Base

Lackland Air Force Base is a United States Air Force base located west-southwest of San Antonio, Texas. The base is under the jurisdiction of the 802d Mission Support Group, Air Education and Training Command ....

, San Antonio, Texas

San Antonio, Texas

San Antonio is the seventh-largest city in the United States of America and the second-largest city within the state of Texas, with a population of 1.33 million. Located in the American Southwest and the south–central part of Texas, the city serves as the seat of Bexar County. In 2011,...

, 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

Army

An army An army An army (from Latin arma "arms, weapons" via Old French armée, "armed" (feminine), in the broadest sense, is the land-based military of a nation or state. It may also include other branches of the military such as the air force via means of aviation corps...

, Marine Corps

Marine corps

A marine is a member of a force that specializes in expeditionary operations such as amphibious assault and occupation. The marines traditionally have strong links with the country's navy...

, Navy

Navy

A navy is the branch of a nation's armed forces principally designated for naval and amphibious warfare; namely, lake- or ocean-borne combat operations and related functions...

, Air Force

Air force

An air force, also known in some countries as an air army, is in the broadest sense, the national military organization that primarily conducts aerial warfare. More specifically, it is the branch of a nation's armed services that is responsible for aerial warfare as distinct from an army, navy or...

 and civilian Department of Defense

United States Department of Defense

The United States Department of Defense is the U.S...

 employees, including two squadrons of the 70th Intelligence Wing

70th Intelligence Wing

The 70th Intelligence, Surveillance and Reconnaissance Wing is a United States Air Force unit assigned to the Air Force Intelligence, Surveillance and Reconnaissance Agency. It is stationed at Fort George G...

 -- the 543rd Support Squadron and the 93rd Intelligence Squadron.

In 2005 the NSA leased a nearby defunct chip plant from Sony

Sony

, commonly referred to as Sony, is a Japanese multinational conglomerate corporation headquartered in Minato, Tokyo, Japan and the world's fifth largest media conglomerate measured by revenues....

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.