Fox (Code Word)

Fox is a brevity code used by NATO pilots to signal the release of an air-to-air munition or other combat function. It should be noted that army aviation elements may use a different nomenclature, as the nature of helicopter fired weapons is almost always air-to-surface.

There are five variations of the Fox brevity word, with a number added to the end of Fox to describe the primary type of sensors the launched munition possesses (if applicable). In addition, a separate brevity word for gunfire exists and is grouped with the four Fox codes for convenience.

Fox One - Indicates launch of a semi-active radar guided missile (such as the AIM-7 Sparrow)

Fox Two - Indicates launch of an infrared guided missile (such as the AIM-9 Sidewinder)

Fox Three - Indicates launch of an active radar guided missile (such as the AIM-120 AMRAAM)

Fox Four - Indicates simulated firing on a target by a bombardier.

Fox Mike - Indicates usage of VHF/FM radio systems.

Guns - Indicates air-to-air or air-to-surface cannon fire.

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