WASHINGTON - A major natural gas leak with a fire near George Washington University Hospital has forced the evacuation of the hospital's emergency room, closed a Metro station and shut down a number of roads. "The emergency room has been evacuated. We have no reports of injury at this time," says D.C. Fire and EMS spokesman Alan Etter. "I see flames about seven feet high. You can smell gas in the air," says Patrick, a WTOP caller who is at the scene. "I can see the flames. We're pretty gruesome." The fire at 23rd and George Washington Circle has spread...