A police sniper mans his rifle atop an armored personnel carrier during a police assault on a house on Franklin Street during the search for Dzhokhar Tsarnaev, the surviving suspect in the Boston Marathon bombings, in Watertown, Massachusetts April 19, 2013. The manhunt for Dzhokhar Tsarnaev, 19, one of two brothers believed to have carried out Monday's attack, took a dramatic turn just minutes after authorities announced they were lifting a shelter-in-place order imposed on the entire city of Boston. REUTERS/Jim Bourg (UNITED STATES - Tags: CRIME LAW)