This massive piece of U.S. history was just sunk in the Gulf of Mexico. Here’s why

The historic SS United States, once the fastest ship on the seas, made a slow final journey beneath the waters Wednesday.The famous ocean liner — which is longer than the Titanic and crossed the Atlantic more than 800 times — was deliberately sunk Wednesday to the bottom of the Gulf of Mexico, where the once-luxurious behemoth was set to begin a new chapter as the world’s largest artificial reef.It was a long goodbye. Hours after the sinking began on a cloudy afternoon, much of the hulking...