the Berlin Airlift. The squadron again reformed in the 'Special Duties' role when No. 192 Squadron RAF was renumbered at RAF Watton on 21 August 1958, moving to nearby Wyton in April 1963. It was only following the end of the Cold War that the signals intelligence role of the squadron was publicly recognised. Signals intelligence encompasses both Electronic Intelligence (Elint) and Communications Intelligence (Comint). The squadron flew this role using de Havilland Comets. The Comets were replaced by a modified version of the Hawker-Siddeley Nimrod in 1974. One of the three Nimrods on strength was retired at the end of November 2009 with the other two remaining in service until June 2011. The Nimrods were replaced by three Boeing RC-135W Rivet Joint aircraft. In January 2011 personnel from 51 Squadron began training at Offutt Air Force Base in the US for conversion to the RC-135. Crews were to be deployed on joint missions with the USAF 343rd Reconnaissance Squadron until the new aircraft became available. The first RC135W (ZZ664) was delivered to the Royal Air Force on 12 November 2013, and entered operational service in 2014, taking part in Operation Shader against ISIL in Iraq and Syria. Aircraft operated Aircraft operated have included: B.E.2 B.E.12 FE2b Martinsyde G.100 Avro 504K Sopwith Camel Vickers Virginia Mk10 Avro Anson Mk1 Armstrong Whitworth Whitley Mk 2–5 Handley Page Halifax Mk B2 and B3 Short Stirling Mk5 Avro York de Havilland Comet Mk2R English Electric Canberra B2 Handley Page Hastings C1 Hawker Siddeley Nimrod R1 Boeing RC-135W Rivet Joint See also Other Nimrod squadrons No. 42 (Reserve) Squadron – Nimrod OCU No. 120 Squadron No. 201 Squadron No. 206 Squadron List of Royal Air Force aircraft squadrons No. 51 Squadron RAF Regiment References Notes Bibliography Ford, Keith S. Snaith days: Life with 51 Squadron, 1942–45. Warrington, Cheshire, UK: Compaid Graphics, 1993. . Ford, Keith S. Swift and Sure: Eighty Years of 51 Squadron RAF (York's Own Squadron). Preston, Lancashire, UK: Compaid Graphics, 1997. . Halley, James J. The Squadrons of the Royal Air Force and Commonwealth, 1918–1988. Tonbridge, Kent, UK: Air-Britai (Historians) Ltd., 1988. . Lake, Jon. "Wyton's Cold War spyplanes: No 51 Squadron's Canberras". International Air Power Review. Volume 1, 2001. Norwalk, Connecticut, USA: AIRtime Publishing. pp. 130–137. . ISSN 1473-9917. Moyes, Philip J.R. Bomber Squadrons of the RAF and Their Aircraft. London: Macdonald and Jane's (Publishers) Ltd., 1964 (Revised edition 1976).