Editing Grumman E-2 Hawkeye (section)

===Background===
Continual improvements in airborne radars through 1956 led to the construction of AEW airplanes by several different countries and several different armed forces. The functions of command and control and sea and air surveillance were also added. The first carrier-based aircraft to perform these missions for the U.S. Navy and its allies was the [[Douglas A-1 Skyraider|Douglas AD Skyraider]], which was replaced in US Navy service by the [[Grumman E-1 Tracer]], which was a modified version of the [[S-2 Tracker]] twin-engine [[anti-submarine warfare]] aircraft, where the radar was carried in an aerofoil-shaped radome carried above the aircraft's fuselage.<ref name="Godfrey p7-8">Godfrey 1977, pp. 7–8.</ref>