How a Chechen terror suspect wound up living on taxpayers' dollars near the National Zoo. The apartment felt like a safe house. The curtains were drawn. Someone else's family portraits hung on the walls, and a stranger's books lined the shelves. Other than a small framed photograph of the sons he had not seen in nearly three years, Ilyas Akhmadov hadn't bothered to unpack in the two weeks that he'd been there. His meager belongings stood near the door, ready for a hasty exit. ... Akhmadov's story might be just another shadowy tale from the global war on terror, if...