Anwar al-Awlaki

Boston Marathon trial retraces the footsteps of bomber brothers

Using surveillance videos and photos, prosecutors in the Boston Marathon trial played an FBI montage Monday that traced the footsteps of the Tsarnaev brothers moving through cheering crowds, then detonating two pressure-cooker bombs in one of the worst terrorist attacks in U.S. history.

The pictures, most never seen before, were culled from tens of thousands of images the FBI collected after the April 2013 blasts, which killed three people and injured more than 260 others. Investigators soon zeroed in on more than 70 images showing Dzhokhar Tsarnaev and his older brother, Tamerlan, each wearing a dark jacket and black backpack, nonchalantly walking through the marathon...