Los Angeles Times: A "potentially deadly" explosive device that could have caused severe casualties was found along the intended route of a Martin Luther King Day march in Spokane, Wash., half an hour before the event was to begin, the FBI said Tuesday. The annual Unity March was rerouted after city workers noticed a black Swiss Army backpack apparently abandoned on a bench about 9:25 a.m. Monday, said Frank Harrill, the supervisory senior resident agent in the FBI's Seattle division.