Super-timing?
Consider today's Zawahiri tape, in which he wears the white robe generally believed to signal an impending attack. He also offers a truce, which is part of the Mohammedan requirement before initiating an attack. Consider also the Hinrichs episode at OU in October, which appears to be under heavy investigation despite the usual Nothing-To-See-Here public front. Consider also that Dearborn is a long-time center of Arab population. Have our authorities added up this equation?
Hope and pray.