He rolled on the ground, unloaded a full clip into his own police car where there was a HANDCUFFED SUSPECT and yelled things like "shots fired" and "I'm hit"
It really depends, if the shot is far enough away from a suppressed gun with supersonic ammunition, you won't hear the actual gunshot, just the crack of the bullet. Which is still plenty loud, but different.
With subsonic ammunition, guns can get really quiet, but range and stopping power are severely impacted. This is why the Soviets and Russians have designed specific subsonic ammunition and weapons platforms, to minimise these disadvantages.