"Digital Radar Relay" (SAGE data system) used AT&T voice lines, microwave towers, switching centers (e.g., SAGE NNX 764 was at Delta, Utah & 759 at Mounds, Oklahoma), etc.; and AT&T's "main underground station" was in Kansas (Fairview) with other bunkers in Connecticut (Cheshire), California (Santa Rosa), Iowa (Boone) and Maryland (Hearthstone Mountain). CDTS modems at automated radar stations transmitted range and azimuth, and the Air Movements Identification Service (AMIS) provided air traffic data to the SAGE System. Radar tracks by telephone calls (e.g., from Manual Control Centers in the Albuquerque, Minot, and Oklahoma City sectors) could be entered via consoles of the 4th floor "Manual Inputs" room adjacent to the "Communication Recording-Monitoring and VHF" room. In 1966, SAGE communications were integrated into the AUTOVON Network. SAGE Sector Warning Networks (cf. NORAD Division Warning Networks) provided the radar netting communications for each DC and eventually also allowed transfer of command guidance to autopilots of TDDL-equipped interceptors for vectoring to targets via the Ground to Air Data Link Subsystem and the Ground Air Transmit Receive (GATR) network of radio sites for "HF/VHF/UHF voice & TDDL" each generally co-located at a CDTS site. SAGE Direction Centers and Combat Centers were also nodes of NORAD's Alert Network Number 1, and SAC Emergency War Order Traffic included "Positive Control/Noah's Ark instructions" through northern NORAD radio sites to confirm or recall SAC bombers if "SAC decided to launch the alert force before receiving an execution order from the JCS". A SAGE System ergonomic test at Luke AFB in 1964 "showed conclusively that the wrong timing of human and technical operations was leading to frequent truncation of the flight path tracking system" (Harold Sackman). SAGE software development was "grossly underestimated" (60,000 lines in September 1955): "the biggest mistake [of] the SAGE computer program was [underestimating the] jump from the 35,000 [WWI] instructions … to the more than 100,000 instructions on the" AN/FSQ-8. NORAD conducted a Sage/Missile Master Integration/ECM-ECCM Test in 1963, and although SAGE used AMIS input of air traffic information, the 1959 plan developed by the July 1958 USAF Air Defense Systems Integration Division for SAGE Air Traffic Integration (SATIN) was cancelled by the DoD.<ref>Missile Master Plan ; identified by Schaffel p. 260: "…the Defense Department to issue, on June 19, 1959, the Key features of the plan included a reduction in BOMARC squadrons, cancellation of plans to upgrade the interceptor force, and a new austere