System Development Corporation (SDC) also built a Simulation Facility (SIMFAC) in Paramus, New Jersey to model the SAC Command Post using "Command/Control personnel stations, capabilities to produce simulated SACCS hardware printouts…wall displays [and] a soundproof observation deck [booth] in which SIMFAC personnel perform actions necessary to simulate all external occurrences starting from an Intelligence buildup to changes in threat responses"--the 50 ft × 35 ft (15 m × 11 m) "isolation booth" was completed in 1962 by International Electric Corporation.
The ITT 465L Strategic Air Command Control System (SACCS, SAC Control System, 465L Project, 465L Program) was a Cold War "Big L" network of computer and communication systems for command and control of Strategic Air Command "combat aircraft, refueling tankers, [and] ballistic missiles". International Telephone and Telegraph was the prime contractor for Project 465, and SACCS had "Cross Tell Links" between command posts at Offutt AFB, March AFB, & Barksdale AFB (SACCS also communicated with the Cheyenne Mountain Complex and Air Force command posts. The 465L System included IBM AN/FSQ-31 SAC Data Processing Systems, Remote (RCC) and Simplex Remote Communication Systems (SRCC), SAC Network Control Office, "4-wire, Schedule 4, Type 4B alternate voice-data operation", and one-way communication with "ICBM launch control centers" (the SAC Digital Network upgraded to two-way communications.) In addition to IBM for the "Super SAGE type computers", another of the 6 direct subcontractors was AT&T ("end-to-end control" of the communications circuits),
Strategic Air Command began using the telephonic Army Command and Administrative Net (ACAN) in 1946 until switching to the 1949 USAF AIRCOMNET "command teletype network" (the independent Strategic Operational Control System or SOCS with telephones and teletype was "fully installed by 1 May 1950".): 77 SACE deployed a worldwide communications network in 1958 with a day-to-day telephone system, a teletype system, an SSB HF system, and the Primary Alert System--"a direct line telephone system between the SAC underground command post and all its subordinate command and control centers (numbered air force and wing command posts)."
In 1956, CINCSAC determined SAC's leased teleprinter (teletype) circuits and radio links were too slow,[failed verification] and SAC began using a computer in 1957. A SAC Liaison Team was located at the NORAD command post beginning 1 February 1958, and the 2 commands agreed direct land lines should connect SAC bases and Air Defense Direction Centers. After CONAD designated 3 "SAC Base Complexes" (geographical areas) by 1956--Northwestern United States, Montana-through-North Dakota area, and the largest: a nearly-triangular "South Central Area" from Minnesota to New Mexico to Northern Florida—NORAD's Alert Network Number 1 became operational on July 1, 1958, with the 1957 SAC nuclear bunker as 1 of the network's 29 transmit/receive stations.
On February 11, 1958, Headquarters USAF published General Operational Requirement or GOR 168 for SACCS (the Westover AFB command post was to get a computer system) and on April 1, HQ USAF changed the SACCS designator from Program 133L to 465L. SAC's QOR for the National Survivable Communications System (NSCS) was issued September 13, 1958,: 175 and in October 1959 the systems cost had increased from $139.7 million to $339.8 million in 12 months: the Office of the Secretary of Defense—with "doubts regarding the validity of the entire 465L concept"—cut the program by December 1. In September 1960 the "installation of a SAC display warning system" included 3 consoles (e.g., BMEWS Display Information Processor (DIP) in the Offutt bunker: 218 and on 7 December I960, the 465L Program was cut to ""a most austere approach" (an austere air defense sector was also established for NORAD, which soon planned a smaller BUIC control system.) "In July 1961, the Department of Defense redirected SACCS 465L to a pre-strike system and established a separate [airborne] post-attack command control system with air and ground elements.
by 1962, "SAC installations, inclusive of those overseas and of tenant bases, peaked at 85". "Project 465L, the SAC Control System (SACCS) [with] over a million lines, reached four times the size of the SAGE code and consumed 1,400 man-years of programming; SDC invented a major computer language, JOVIAL, specifically for this project."
SACCS "was delivered to Strategic Air Command by the contractor in March 1965" and was designed to survive nuclear attack and to provide rapid transmission, processing, and display of information to support command and control of SAC's geographically separated forces. On January 1, 1968, the SACCS attained operational capability (maintenance at Offutt and March were by the respective 55th Strategic and 33rd Communications Squadrons.) During construction of NORAD's nuclear bunker, SAC's 1963 plan for construction of a Deep Underground Command Center in Colorado beginning in 1965 was cancelled.
In 1968, "after SAC completed its tests during March, AFSC arranged for modification of the SAC terminals for use with LES-6" for satellite communications. A SACCS remote communications van[specify] completed on 12 July 1968 was shipped to Andersen AFB, Guam, e.g., for supporting the SACADVON (30 SAC B-52s had deployed on 17 February 1965 to Guam for the Vietnam War.)
On October 6, 1975, SACCS officially integrated with the Worldwide Military Command and Control System when the original IBM 4020 Military Computers were replaced by Honeywell 6080 computers (remaining FSQ-31 components were entirely decommissioned in November.) Offutt became part of the WWMCCS Intercomputer Network as one of "six initial WIN sites in 1977" (20 sites by 1981). A 1977 plan was for SACCS to be replaced by the ITT SAC Automated Total Information Network (SATIN IV), "a totally new command and control system " (ITT had won the initial SATIN IV contract over Sylvania.)
Instead of SATIN IV, a restructured plan deployed the Strategic Air Command Digital Information Network to replace SACCS "Data Transmission Subsystem and part of the Data Display Subsystem", e.g., on November 5, 1986, "Martin Marietta Corporation technicians began installing SAC Digital Network (SACDIN) equipment in 91st Strategic Missile Wing missile launch control centers (i.e., either a HUTE rack or MBCP rack). On February 20, 1987, "SAC declared initial operational capability for the SAC Digital Network when [it] operated successfully between the Headquarters SAC Command Center and the 55th Strategic Reconnaissance Wing Command Post, both located at Offutt AFB, Nebraska, and the 351st Strategic Missile Wing Command Post at Whiteman AFB, Missouri." SACDIN eventually "linked 135 locations and permitted two-way message communications with ICBM launch control centers for the first time," and the Ground Wave Emergency Network communication system had a Final Environmental Impact Statement issued in September 1987.
On May 6, 1988, "software became operational on three Post Attack Command and Control aircraft making the common Airborne Launch Control Center fully capable of launching Peacekeeper and Minuteman missiles."
In 1990 when the 465L System had been entirely replaced by the "SAC Auto Cmd/Ctl Sys" for several years, the SAC C2 system continued using that name as part (except for the SACCS Data Processing System) of "USSTRATCOM Command and Control" (PE 0101316F). By 1995, the "emergency war order (EWO) communication systems consist[ed] of the primary alert system (PAS), SAC digital network (SACDIN), survivable low frequency communication system (SLFCS), Air Force satellite communications system (AFSATCOM), [ICBM] Super High Frequency Satellite Terminal (ISST) and [UHF] voice radio communication systems" The USSTRATCOM SACCS was redesignated[when?] Strategic Automated Command and Control System with the same acronym on tbd\[specify] and by 2011, the Minimum Essential Emergency Communications Network was being modernized in the Nuclear Command and Control System. By February 2012, USSTRATCOM was using the Integrated Strategic Planning and Analysis Network (ISPAN), and the USSTRATCOM Replacement Facility Fit-Out (PE 0303255F) was to "include secure HEMP-Shielded Command and Control Center, mainframe computer data centers, multiple 24/7 mission operations centers, storage and maintenance areas, labs/workrooms, back-up generators, Uninterruptible Power Source, Technical Control Facility, Fiber Ring, [with funding] beginning in FY13."
|465L communication diagram (Fig. 1)|
|prototype EDTCC at ITT test site|
|SAC Command Post (at minute 5:25)|
This section covers description, administrative procedures and maintenance requirements for the Strategic Air Command Control System (SACCS). This system was initially known as the 465L Project. … The customer may use the circuits for voice transmission when desired by patching 4-wire telephone terminating equipment on the circuit at each end. Signaling equipment is added with the telephone set at EDTCCS. Circuits from EDTCCS terminating at RCCS and SRCCS are provided with signal receiving equipment A 1600 cps tone is used for signaling from an EDTCC. No means of signaling is provided from an RCC or SRCC to an EDTCC. … Circuits which interconnect headquarters locations with operational bases and missile complexes or other headquarters locations… Over-all administration of these circuits is handled by the SAC Network Control Office. [cf. SAC Communications Control] … An RCC is the customer's data equipment location at an operational base command post. RCCS are normally connected by data circuits to two different EDTCCS.
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"In support of its design and development responsibilities in the Strategic Air Command Control System (SACCS) project, SOC established a Simulation Facility (SIMFAC) in Paramus, New Jersey. The SIMFAC is a physical model of the SAC Underground Command Post complete with Command/Control personnel stations, capabil ities to produce simulated SACCS hardware printouts and wall displays. There is a soundproof observation deck in which SIMFAC personnel perform actions necessary to simulate all external occurrences starting from an Intell igence buildup to changes in threat responses.(text-only copy available at archive.org)
Nearly $413,000 was contribute.*:by military and civilian personnel!!in the European area. … Data Displays Being Tested In SAC Booth PARAMUS, N.J. (Special) — On«rof the world's largest "isolation*booths" is being used here to equipment and man's mentalers in handling the forecast, problem of keeping track of the Strategic Air Comd battle force various simulated combattions. •'•'?.Built by International Electric Corp., a subsidiary of International Telephone and Telegraph;the booth incorporates two-way mirrors, hidden microphones and tape recorders. '-jFifty-feet long and 35-feet wlde,-^the booth is called Simfac (for":simulation facility) and is to be used in connection with a proposed working model of a new SAC command control system developed here by IEC. Known as SACCS, the command,control system will be a fully auto-mated, electronic computer net-work which will keep tab on SAC'*combat aircraft, refueling tankers,ballistic missiles and 270,000 mem Also, It will display up-to-the-minute, force status on 16 wall-sized projection screens at command headquarters. Statistics: The problem is one of Matingman's capability to that of a machine. That is, how much visually-displayed information can SAC controllers absorb at one time; how fast can they find a specific number of 20, 40. or 50; do colored displays help or hinder them, and will the staff operate less efficiently if given too much data at one time? These and other questions are being studied by IEC psychologists* human engineers and researchers in the closely controlled laboratory conditions of Simfac.(subscription required)
SAGE--Air Force project 416L--became the pattern for at least twenty-five other major military command-control systems… These were the so-called "Big L" systems [and] included 425L, the NORAD system; 438L, the Air Force Intelligence Data Handling System; and 474L, the Ballistic Missile Early Warning System (BMEWS).
The system makes a 70mm positive film of the information. Three images of each message appear on the film, and a powerful beam of light carries them about 30 feet to the screen. Before striking the film, however, the light beam is split into the three primary colors by special mirrors. Combining these colors, gives the display system a color code of seven distinct colors for easy recognition of various types of information. The complete cycle, from display request to projected image, requires less than 15 seconds. … Data Processing Central (DPC), Project 465L, Prototype Equipment located at the ITT Data and Information Systems Division test facility. … Display equipment will be installed at Offutt AFB; March AFB, Calif.; Westover AFB, Mass.; and Barksdale AFB, La.; any of the four will be able to serve as a fully equipped SAC central headquarters at any time. … As late as 1957, the first widely accepted programming system, FORTRAN, was released for the IBM 704.
((cite web)): CS1 maint: archived copy as title (link) "One of the first is the SAC Communications System, [sic] now the Strategic Automated Command and Control System (SACCS)… The 279L system, originally with Blue Scout missiles based in Nebraska, and later with modified Minuteman II missiles, used UHF transmitters in the missile payload sections. It became known as the Emergency Rocket Communications System (ERCS). …responsibility to be the Missile Radio Communications System (MRCS) station for the wing or squadron was passed between LCCs periodically"
the Whirlwind computer, which was a digital version of the ASCA, was about five million dollars, in 1950's [sic] dollars … For the 1949 fiscal year, MIT requested 1.5 million dollars for the Whirlwind project. … one [SAGE computer] was at Lincoln Lab, …the XD-1, and the other one was at Kingston, the XD-2. So we used both those sites for development. … The XD-1 was a simplex system…not duplex … the original vacuum-tube computers—the last one was finally taken down in 1983, still operating. … IBM got…about 500 million dollars…to build the 56 computers.
In 1956, Gen. Curtis LeMay, commander-in-chief of SAC, saw a need for improving SAC's command and control system. A coordinated effort was undertaken by government and industry to provide this system. The project was designated 465L, and was the predecessor to the current Strategic Automated Command Control System network. In the mid-1960s, SAC procured the 465L system
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1958…1 January Headquarters SAC established the Office of Assistant CINCSAC (SAC MIKE) at Inglewood, California. This position was designated to serve as an extension of Headquarters SAC and was responsible for working closely with the Air Force Ballistic Missile Division … 1966…17 April The first attempted launch of a Minuteman II ICBM by means of the Airborne Launch Control System (ALCS)
The single SACDIN cabinet at PLCCs is the communications processor set (HUTE rack). … SAC Digital Network System
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