Even if you follow all four rules you can still shoot yourself by accident.Two [Netherlands Air Force} F-16s were conducting firing exercises on January 21. It appears that the damaged aircraft actually caught up with the 20mm rounds it fired as it pulled out of its firing run. At least one of them struck the side of the F-16’s fuselage, and parts of a round were ingested by the aircraft’s engine. The F-16’s pilot managed to land the aircraft safely at Leeuwarden Air Base.
And not the first time: https://www.popularmechanics.com/milita ... self-down/