yeah but they could've made some efforts in concealment LOLCorrosion and metal fatigue are the bane of every mechanical device, ocean going, land going, and aircraft.... The Arlie Burkes likely have a very high carbon steel for strength and fatigue resistance!
oxidation occurs with high carbon steels just by "looking at them"!
just click on the link inside Yesterday at 4:19 PM
and look around the CIWS in the picture