A defensive brevity call indicating you are being radar-locked by a friendly aircraft. Used to prevent fratricide and to clarify radar contacts during complex air-to-air engagements.
Application in DCS World
In DCS multiplayer, “Buddy Spike, Bullseye XXX/YYY” is essential to avoid friendly AMRAAM or Sparrow shots. It also teaches cadets proper radar identification and situational awareness under pressure.