Army Security Agency
From Wikipedia:The United States Army Security Agency (ASA) was, from 1945 through 1976, the United States Army's electronic intelligence branch. Its motto was "Vigilant Always." The Agency was the successor to a number of Army signals intelligence operations dating back to World War I. As well as intelligence gathering, it also had responsibility for the security of Army communications and for electronic countermeasures operations. In 1976, the USASA was merged with the US Army Military Intelligence component in a process which formed the United States Army Intelligence and Security Command (INSCOM).Composed primarily of soldiers with the very highest scores on Army intelligence tests, the ASA was tasked with monitoring and interpreting military communications of the Soviet Union, the People’s Republic of China, and their allies and client states around the world. ASA was directly subordinate to the National Security Agency and all field stations had NSA tech reps on site.All gathered information had time-sensitive value depending on its importance and classification. Information was passed through intelligence channels within hours of intercept for the lowest-priority items, but in as little as 10 minutes for the most highly critical information.These occupations, which required top secret clearance, were essential to U.S. Cold War efforts. ASA units operated in shifts, 24 hours a day, seven days a week. ASA troops were not allowed to discuss their operations with outsiders — in fact, they could not talk among themselves about their duties unless they were in a secure location. Even today, decades after they served, some of the missions still cannot be discussed. Owing to the sensitivity of the information with which they worked, ASA soldiers were subject to travel restrictions during and long after their time in service. The activities of the U.S. Army Security Agency have only recently been partially declassified.