WATERTOWN, MA – APRIL 22: An American flag sits atop the Franklin Street sign while many different members of law enforcement investigate the scene on April 22, 2013 in Watertown, Massachusetts. A manhunt ended for Dzhokhar A. Tsarnaev, 19, a suspect in the Boston Marathon bombing after he was apprehended on a boat parked on a residential property in Watertown, Massachusetts. He has been charged with one count of using a weapon of mass destruction and one count of malicious destruction of property by means of an explosive device resulting in death. His brother Tamerlan Tsarnaev, 26, the other suspect, was shot and killed after a car chase and shootout with police. The bombing, on April 15 at the finish line of the marathon, killed three people and wounded at least 170. (Photo by Jared Wickerham/Getty Images)