In military aviation, this brevity code signals that a combat aircraft has depleted its air-to-ground weapons and can no longer conduct ground strikes. Pilots use it to quickly inform controllers and flight leads of their status without transmitting a detailed inventory over an open radio channel. It specifically refers to ground attack munitions, meaning the aircraft might still carry air-to-air weapons for self-defense.
Heard on the job
Ghost two-four is Dakota on the gun, still carrying two heaters for the ride home.
Insider tip
While Winchester means an aircraft is out of all weapons entirely, Dakota specifically means it is only out of air-to-ground ordnance.