What underground nuclear bunker near Blue Ridge Summit, Pennsylvania known as "underground Pentagon" became operational in 1966?
Raven Rock Mountain Complex The Raven Rock Mountain Complex (RRMC) is an American military installation with an underground nuclear bunker near Blue Ridge Summit, Pennsylvania, at Raven Rock Mountain that has been called an "underground Pentagon." The bunker has emergency operations centers for the United States Army, Navy, and Air Force. Along with Mount Weather Emergency Operations Center in Virginia and the Cheyenne Mountain Complex in Colorado, it formed the core bunker complexes for the US Continuity of Government plan during the Cold War to survive a nuclear attack.
US Naval Ordnance Testing Facility Control Tower US Naval Ordnance Testing Facility Control Tower is a historic building located at Topsail Island, Pender County, North Carolina. It was built in 1946 by Kellex Corporation, and is a reinforced concrete frame measuring 16 feet by 16 feet and 30 feet high. The building was purchased for civilian purposes in 1957 and a flat roof replaced a formerly open platform on the top level. It was erected to serve as commend headquarters for "Operation Bumblebee."