The other day, for my last shot at an outdoor range I took off my ear protection and fired from my 9mm. My ears didn't ring or anything but the loudness was pretty strong...an understatement. It made me really wonder what effect the extreme sound of a discharged firearm (especially many times, especially indoors) would have on me if I was ever in a critical self-defense situation. If I was in my hall firing on an intruder coming toward me, or in an enclosed parking garage firing back after being shot in the arm during a bungled mugging attempt, what sort of physical response would I encounter concerning the sounds involved? How do our marines or army in combat handle such extreme sounds in battle? I just cannot imagine the extreme sounds involved in a gun battle, even of only a few rounds fired, especially since a .45acp 1911 is next to my bed.