2nd Bn, 56th Arty, 1966-68 (Source: Richard Tracy) The TTR, at left, was operated by a 4-man team in the RCT: elevation, azimuth, range operators (who manually controlled those functions of the antenna), and a tracking supervisor (who assisted with overall coordination). The TRR, at right, was added to the original N-H system to enhance its ECCM capability: it could be activated -- if needed -- by the range operator; its inclusion created an "Improved Nike-Hercules" system. The TRR was famous for its ability to "burn through ECM"!