RAF Edzell reopened in 1960, forming part of the United States Navy global High Frequency Direction Finding (HFDF) network, used to track various targets around the world.The ending of the Cold War, and advances in technology rendered the HF network obsolete, and the station closed in October 1997,[1] by which time staffing levels had fallen to 300 local, and 700 military personnel.612 Squadron was formed on 1 June 1937 at RAF Dyce as an army co-operation unit of the Auxiliary Air Force and was initially equipped with two-seat Avro Tutor training aircraft.This followed through his other Scottish acquisition with the purchase from the MOD's Property Services Agency of the entire Married Quarter housing estate at the former at the Royal Navy facility at Rosyth Edinburgh.Through their sales company Welbeck Homes all the housing was upgraded and sold to local buyers and all the residential part of the estate is in civilian ownership.