Friend or foe missile

Friend or Foe missile from Borger's All The Sector's Weapons Systems.

The Friend or Foe Missile was a projectile weapon used by the Terran Confederation and Kilrathi fleets.

The missile locked on the nearest ship not broadcasting a friendly communications signal. As a result they could accidentally target friendly ships with damaged communications systems, including the ship firing the missile.

The Pilum FF was a Terran Confederation version of the missile. The Fang FF was a Kilrathi Empire version

Friend or Foe missiles were found on the Rapier II, Raptor, Venture, Krant and Jalthi. They were featured in both Weapons of the Terran and Kilrathi Fleets and Borger's All The Sector's Weapons Systems.

Wing Commander II: Vengeance of the Kilrathi

Friend or Foe Missile. Capable of identifying the distinctive signal broadcast by all Terran ships, the friend or foe locks onto the nearest ship that isn't broadcasting that signal. (This weapon will target friendly ships whose communication systems are damaged.)

Victory Streak

Pilum Friend-or-Foe (FF)
Damage	250
Max Velocity	1200 k/s
Acceleration	800 k/s2
Max Y/P/R	80 dps
Lock Time	0 sec

The Pilum friend-or-foe (FF) missile was developed once ship systems were able to distinguish between friendly and enemy ships. Capable of identifying the distinctive Confederation ship signal, it makes a beeline for the nearest ship that isn't broadcasting that signal. This has resulted in the destruction of several Terran ships whose communications systems were damaged. In spite of this inherent danger, both sides continue to use the FF as standard armament for medium and heavy fighters. This missile doesn't require a lock, and it will acquire a new target if the current one is destroyed before detonation.