Quick Reaction Alert (QRA) is state of readiness and modus operandi of air defence maintained at all hours of the day by NATO air forces. The United States usually refers to Quick Reaction Alert as 'Airspace Control Alert'.
A QRA Typhoon from XI Sqn at RAF Coningsby escorts a Russian Tu-95 (ASCC designation "Bear") in August 2008
RRH Benbecula in June 2004
RRH Staxton Wold in May 2009. Staxton Wold is possibly the oldest operational radar station in the world
A QRA Tornado F3 of 111 Sqn at Leuchars intercepting a Russian Tupolev Tu-160 flying west of Stornoway in March 2010
Royal Air Force Coningsby or RAF Coningsby, is a Royal Air Force (RAF) station located 13.7 kilometres (8.5 mi) south-west of Horncastle, and 15.8 kilometres (9.8 mi) north-west of Boston, in the East Lindsey district of Lincolnshire, England. It is a Main Operating Base of the RAF and home to three front-line Eurofighter Typhoon FGR4 units, No. 3 Squadron, No. 11 Squadron and No. 12 Squadron. In support of front-line units, No. 29 Squadron is the Typhoon Operational Conversion Unit and No. 41 Squadron is the Typhoon Test and Evaluation Squadron. Coningsby is also the home of the Battle of Britain Memorial Flight (BBMF) which operates a variety of historic RAF aircraft.
A Eurofighter Typhoon takes off from RAF Coningsby.
Three Avro Lancaster B.IIIs of No. 619 Squadron, airborne from RAF Coningsby whilst based there during 1944.
Phantom FGR.2 XT895 from No. 6 Squadron, this was the first squadron to get operational Phantoms in May 1969 at Coningsby; No. 54(F) Squadron received the aircraft in September 1969; both squadrons were disbanded in 1974
Panavia Tornado F3 ZE785 of No. 41 Squadron in July 2007.