text:  When we arrive at the Erlanger Baroness Hospital in Chattanooga, there's a snag. The operating rooms are full with emergencies. The 7 p.m. organ retrieval's been delayed by at least four hours. Finally, it looks like an operating room will open up soon. But first, hospital staff silently line the hallway for the honor walk. The donor is slowly wheeled past to where her breathing tube will be removed. Her family quietly walks behind her bed.