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Army soldiers assigned to the 25th Infantry Division, Schofield Barracks, Hawaii, participate in a test of the Navy's Mobile User Objective System (MUOS), a next-generation narrowband satellite communications capability. The testing was coordinated and overseen by the Navy's Commander, Operational Test and Evaluation Force; the Army's Operational Test Command and the Joint Interoperability Test Command. The MUOS communications system completed a series of critical test and evaluation events and, in October 2019 was assessed as operationally effective, operational suitable and cyber survivable.