sentences:  By inputting grid coordinates the BFT becomes both the map and compass for mechanized units.With proximity warnings enabled the vehicle crew is made aware as they approach critical or turn points.Users of BFT systems include the United States Army, the United States Marine Corps, the United States Air Force, the United States Navy ground-based expeditionary forces (e.g., United States Naval Special Warfare Command (NSWC) and Navy Expeditionary Combat Command (NECC) units), the United Kingdom, and German Soldier System IdZ-ES+.