USS New York contains 7.5 tons of steel from twin towers
                                
                                
                                    (Newser) -
                                    The new Navy assault ship USS New York, built with World Trade Center steel, arrived in its namesake city today with a 21-gun salute near the site of the 2001 terrorist attacks. First responders, families of victims, and the public gathered at a waterfront viewing area, where they could see...