History: Fire Controlman First Class E.M. Smith, gun captain of one of the USS Missouri’s nine 16-inch main guns, opens the gun’s highly polished breech plug during the ship’s shakedown cruise to Trinidad, Aug 1944. (960x1235)

https://i.redd.it/fau6fcstp5h71.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/p3pdol/fire_controlman_first_class_em_smith_gun_captain/?utm_source=ifttt