Transformational Satellite Communications System
The Transformational Satellite Communications System (TSAT) program was a United States Department of Defense (DOD) program sponsored by the U.S. Air Force for a secure, high-capacity global communications network serving the Department of Defense, NASA and the United States Intelligence Community (IC). It was intended as an enabler of net-centric warfare that would facilitate defense and intelligence professionals making rapid decisions based on integrated, comprehensive information.
Source: Wikipedia — Transformational Satellite Communications System (CC BY-SA 4.0)