Gunnery Sgt. Maurice L. Irvin, the operations chief of Marine Aviation Logistics Squadron 14, demonstrates a self-defense technique during the squadron’s Jane Wayne Day at Marine Corps Air Station Cherry Point, April 25. Irving said it was important to arm themselves with tactics they can use. - Gunnery Sgt. Maurice L. Irvin, the operations chief of Marine Aviation Logistics Squadron 14, demonstrates a self-defense technique during the squadron’s Jane Wayne Day at Marine Corps Air Station Cherry Point, April 25. Irving said it was important to arm themselves with tactics they can use.