Friendly Fire Lock Codes

The Friendly Fire Lock Codes is an item found in H.M.S. Viggolina.

How to obtain
You can find it in the stateroom, accessible after you unlock it using the Stateroom Key.

How to use
After you retrieve it, go to the flight deck and unlock the Friendly Fire lock for the gun turret it corresponds to, via inserting it into the computer inside the air traffic control tower. It is then you can use the gun turret to destroy 3 aircrafts.

Trivia

 * In appearance, this item is identical to the Torpedo Launch Codes and Print Out.