What is the name of the satellite surveillance network managed by the National Security Agency?

The name of the satellite surveillance network managed by the National Security Agency is Echelon. This system is designed for global signals intelligence collection and processing. It intercepts and analyzes satellite communications, phone calls, and other electronic transmissions worldwide, facilitating the NSA's capability to monitor and gather information on potential threats and interests pertinent to national security.

Echelon operates as part of an alliance with other countries' intelligence agencies, enhancing its effectiveness in signal interception and data collection. This extensive network plays a crucial role in international intelligence operations, reflecting the importance of satellite technology in modern surveillance practices.

The other choices represent different systems or concepts that are not linked to the NSA's satellite surveillance network.