The Communications Security Establishment (CSE) was established in 1946 as the Communications Branch of the National Research Council (CBNRC), and was transferred to the DND in 1975 by an Order in Council. The cover was broken by the CBC TV documentary "The Fifth Estate: The Espionage Establishment". The origins of CSE can be traced back to the Second World War where the civilian organization worked with intercepted foreign electronic communications, collected largely from the Canadian Signal Corps station at Rockcliffe airport in Ottawa. CSE also worked with CFS Leitrim (Canadian Forces Station Leitrim), located just south of Ottawa, which is Canada's oldest operational signal intelligence collection station. Established by the Royal Canadian Corps of Signals in 1941 as 1 Special Wireless Station and renamed Ottawa Wireless Station in 1949, CFS Leitrim acquired its current name when the Supplementary Radio System (SUPRAD) was created in 1966. In 1946, the station's complement was 75 personnel. The current strength (2013-2014) is around 2,000 employees. This unit successfully decrypted, translated, and analyzed these foreign signals, and turned that raw information into useful intelligence reports during the course of the war.