The two students –Dias Kadyrbaev and Azamat Tazhayakov -- are facing federal charges that they obstructed the investigation into the Boston Marathon bombings on April 15 by allegedly disposing of a computer and backpack belonging to accused bomber Djokhar Tsarnaev. A hearing in their case is scheduled for May 14. If convicted, they face five years in prison and up to $250,000 in fines. The Kazakhstani pair and Tsarnaev were constant companions for much of the past two years while taking classes at the University of Massachusetts-Dartmouth, roughly 60 miles south of Boston, according to a criminal complaint filed in US District Court on May 1.