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Site-R Raven Rock
Alternate Joint Communications Center (AJCC)

Site R is the Alternate Joint Communications Center (AJCC) located in Raven Rock mountain [hence the name Site R] just over the Pennsylvania State Line near Waynesboro, Pa. The DISA Site-R Computer Operations staff provides computer services to the NCA, the Joint Staff, the OSD and other DoD agencies through Memorandums of Agreement (MOAs). The facility functions as the disaster recovery site for the JSSC's GMC and DISA GCC. The various service [Army, Navy and Air Force] Emergency Operations Centers (AFEOC) are also located at Site R. Support is provided 24 hours per day, 7 days per week. The facility's Operations Center, DCS Technical Control Facility, the Northeast Dial Service Assistance Center and Information Center provide planning, installation, operation, and maintenance of over 38 communications systems (switching, transmission, data distribution, visual information, and power generation) that support the various customers of the Alternate Joint Communications Center Site R.

The initial concept for the Alternate Joint Communications Center originated in 1948. After the Soviet Union detonated its first nuclear weapon in 1949, a high priority was established for the Joint Command Post to be placed in a protected location with close proximity to Washington, D.C. for swift relocation of the National Command Authorities and the Joint Communications Service. In 1950, President Truman approved Raven Rock Mountain, Pennsylvania, as part of Camp Albert Ritchie, Maryland. This new site was named the Alternate Joint Communications Center (AJCC) Site R (R for Raven Rock). In 1951, construction of the facility began, and in 1953, the AJCC Site R became operational.