For a high-speed modern aircraft like the F-35, the gun is primarily for signalling intent to a non-responsive aircraft. The gun is fired so that the tracer she

For a high-speed modern aircraft like the F-35, the gun is primarily for signalling intent to a non-responsive aircraft. The gun is fired so that the tracer shells pass within view of the non-responsive aircraft. Preferably it is noisy enough to be heard. The non-responsive aircraft is expected to wise up, realizing the situation, and then land or leave the territory.