Sen. Robert Byrd fell at his house in Northern Virginia, a spokesman reported Tuesday. Multiple ambulances rushed to the McLean home of the 91-year-old Democratic lawmaker. Byrd, the longest-serving senator in history, “apparently stood up too fast this morning in his home and fell down,” a spokesman explained. “To err on the side of caution his caregiver called an ambulance. He was taken to the hospital where he is currently being checked out. At this point in time there is no indication that he will be admitted.” Byrd was recently hospitalized for a staph infection.