** FILE ** Runner Bob Leonard captured pictures of the Boston Marathon bombing suspects on April 15, 2013, in Boston. Tamerlan Tsarnaev (third from left), who was dubbed Suspect No. 1, and his brother, Dzhokhar  Tsarnaev, who was dubbed Suspect No. 2 by law enforcement, are pictured approximately 10 to 20 minutes before the blasts. (AP Photo/Bob Leonard)

** FILE ** Runner Bob Leonard captured pictures of the Boston Marathon bombing suspects on April 15, 2013, in Boston. Tamerlan Tsarnaev (third from left), who was dubbed Suspect No. 1, and his brother, Dzhokhar Tsarnaev, who was dubbed Suspect No. 2 by law enforcement, are pictured approximately 10 to 20 minutes before the blasts. (AP Photo/Bob Leonard)