On the morning of Monday, Jan. 9, 2006, a 21-year-old Army specialist named Suzanne Swift went AWOL. Her unit, the 54th Military Police Company, out of Fort Lewis, Wash., was two days away from leaving for Iraq. Swift and her platoon had been home less than a year, having completed one 12-month tour of duty in February 2005, and now the rumor was that they were headed to Baghdad to run a detention center. The footlockers were packed. The company’s 130 soldiers had been granted a weekend leave in order to go where they needed to go, to say whatever goodbyes needed saying. When they reassembled at 7 a.m. that Monday, uniformed and standing in immaculate rows, Specialist Swift, who during the first deployment drove a Humvee on combat patrols near Karbala, was not among them.