GBS 373 Executive Summary • The program manager is developing the Global Broadcast Service (GBS) Phase-IV capability that includes an upgraded Transportable Ground Receive Suite (TGRS), new Rucksack Portable Receive Suite (RPRS), new Suitcase Portable Receive Suite (SPRS), and integration of the Digital Video Broadcasting – Satellite – Second Generation (DVB-S2) waveform that should provide more efficient use of available satellite bandwidth. • The Air Force Operational Test and Evaluation Center (AFOTEC) conducted FOT&E-1 from May 25 through June 30, 2016, with participation from the Army Test and Evaluation Command, Marine Corps Operational Test and Evaluation Activity, and the Navy’s Commander, Operational Test and Evaluation Force. FOT&E-1 included operators from the Air Force, Marine Corps, and Army operating and maintaining receive suites at Robins AFB, Georgia. The USS Carl Vinson (San Diego, California) and USS Santa Fe (Pearl Harbor, Hawaii) participated for the Navy, communicating over the Wideband Global Satellite Communications (WGS) system. The GBS receive suites are operationally effective in providing a continuous flow of high-speed, high-volume, multimedia communications for deployed and garrisoned forces. The GBS is not survivable against internal or external cybersecurity threats. The Army Threat Systems Management Office found 17 cybersecurity vulnerabilities on the GBS system that could be exploited by potential adversaries. • The GBS receive suites are not suitable because the system did not demonstrate that it could meet reliability and maintenance repair times, and the documentation lacked adequate troubleshooting procedures. The systems can be made suitable once corrective actions to improve cable durability, system shutdowns, and technical documentation are made and verified. The program manager is in the process of updating technical orders and technical manuals, performing root cause analysis, and implementing corrective actions. System • The GBS is a satellite-based broadcast system providing near-worldwide, high-capacity, one-way transmission of operational military data. • The GBS system consists of three segments - The space segment includes GBS transponders on WGS, Ultra High Frequency Follow-On (UFO) satellites, and an additional government-leased commercial satellite capability to meet operational demand- The transmit segment consists of the GBS Operations Center and Satellite Broadcast Manager (SBM). The GBS Operations Center, located at Peterson AFB, Colorado, remotely creates and manages the GBS broadcast through the primary and alternate SBM located at Oklahoma City, Oklahoma, and Mechanicsburg, Pennsylvania, respectively. The SBM receives data and video products from a variety of sources and packages that source material into a satellite broadcast. The SBM interfaces through DOD Teleport sites for the WGS satellites and fixed Primary Injection Points for the UFO satellites and commercial satellites. - The receive segment consists of ground- and sea-based mobile terminals that extract the appropriate information for distribution to the end users within selected areas of operation. The receive suite configurations include the TGRS, RPRS, SPRS, Shipboard Receive Suite, and the Subsurface Receive Suite.