Fullerton, California, and manufactured it at its facility in Forest, Mississippi. Nomenclature Per the Joint Electronics Type Designation System (JETDS), the nomenclature AN/MPQ-64 is "AN/" indicating Army/Navy(Marines) "M" for 'mobile', "P" indicating a position finder (radar). "Q" for a special-purpose(multipurpose) radar, in this case 3D RADARs. "64" is the 64th model of this family of MPQ radars. See also NASAMS AN/TPQ-36 References External links Sentinel radar at Raytheon Missiles and Defense Ground radars Military radars of the United States Raytheon Company products Military electronics of the United States Military equipment introduced in the 2000s