There are three variations of the Fox brevity word in use, with a number added to the end of Fox to describe the primary type of sensors the launched munition possesses (if applicable). This includes autocannons and collisions.
Prior to the advent of active radar homing missiles the code "Fox three" referred to the use of guns or cannon, such as the M61 Vulcan which is used in various military aircraft. The difference can be noted in various war films, notably in the 1986 film Top Gun, where the term is used in various dogfight scenes.Script error: No such module "Unsubst".