There is a 7.62 NATO M-60 machine gun mount WITHOUT a so-called "flak-shield", which is sloped armor on each side of the weapon. In use the gunner would be targeted between three and five seconds. They would then turn into what is sometimes called "dead meat". This would consist of, at the least two rectangular sheets or armor. Modern Ceramic shields would weigh less then twenty pounds each (two required) proof against penetration by .50 caliber ammunition. These have been standard since 1904 when Hiram Maxim invented the first practical machine gun. The Navy rediscovers the wheel, circa 2015.
It almost looks like the gun and man was inserted into the picture - as he and the gun are so pronounced and that "gun metal" color of the ship looks so worn. I'm sure that's not the case - it's just how it looks to me.
Where is the USS Milwaukee? It's retired in dry dock right?
The USS Milwaukie, shown in the image, a brand new 325 million dollar so-called "Litoral Combat Ship" ship broke down at sea from catastrophic power plant failure after three weeks in service this month and is now being serviced. The white is not deterioration, but ice.