Photo Gallery: Boston manhunt: Friday, April 19, 2013 56/60

People cheer passing police after the arrest of a suspect of the Boston Marathon bombings in Watertown, Mass., Friday, April 19, 2013. Two suspects in the Boston Marathon bombing killed an MIT police officer, injured a transit officer in a firefight and threw explosive devices at police during their getaway attempt. (AP Photo/Matt Rourke) ORG XMIT: MAMR150