When firing air-to-air missiles, NATO pilots use "Fox" brevity codes to inform allies of the launch type and reduce the risk of friendly fire. "Fox One" indicates the launch of a semi-active radar-homing missile (like the AIM-7 Sparrow), which requires the pilot to maintain a radar lock on the target. "Fox Two" refers to an infrared-homing or "heat-seeking" missile (like the AIM-9 Sidewinder), which is common in close-range dogfights. "Fox Three" is used for active radar-homing missiles (like the AIM-120 AMRAAM), often called "fire-and-forget" because the missile has its own onboard radar. When firing the internal gun, pilots traditionally say "Guns, Guns, Guns" to notify others of the active stream of tracers. These standardized codes ensure that every pilot in the battlespace understands exactly what weaponry is currently airborne and how it is tracking its target.