Latitude: 14° 21' 39" N Longitude: 101° 23' 34" E
Area use / Military Branches: former USAF 621st TCS
Former USAF 621st Tactical Control Sqn at Khao Kieo a.k.a. "Green Hill Station" Udorn airbase; Thailand.
It was part of the former Back Porch Integrated Wideband Communications System consisting of stations in S-Vietnam and Thailand and was linked to Vung Tau, then in South Vietnam.
Its mission: controlling and managing US airpower in sout-east asia.
621st TCS was operational here from 1969-1974
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