The Manhunt Is Over, but the Investigation Has Just Begun

An explosion in New Jersey on Sept. 17 marked the start of a busy two days for grassroots jihadists in the United States -- and for the law enforcement officers responding to the attacks. In the span of 48 hours, both emergency situations were dealt with and the primary suspects were either taken into custody or dead. But the work is far from over for U.S. law enforcement. The old homicide unit motto goes, "Our day begins when your day ends," and the saying is no less true for the officials tasked with handling the long and difficult investigations ahead....