21°28′32.99″N 158°3′4.16″W / 21.4758306°N 158.0511556°W
The Kunia Regional SIGINT Operations Center (KRSOC, also pronounced "Kay-ARSock"), also known as the Kunia Tunnel[1] or the Regional Signals Intelligence Operations Center Kunia, was a United States National Security Agency facility[2][3] that was located on Kunia Road between Kunia Camp and Wheeler Army Airfield in central Oahu, Hawaii. In 2012, the facility was replaced by the Hawaii Cryptologic Center.