Possibly part of TROJAN?
"Connectivity is provided through the Fort Belvoir TROJAN switching center which currently connects TROJAN systems at various US bases with front-end antenna arrays located worldwide. The Communications Central combines this network with mobile switch extensions to offer a worldwide, forward-deployed, quick reaction reporting and analysis link."
Covert, Military - Army, Military - Communications
Links: www.globalsecurity.org
By: kjfitz