cambridge rindge and latin score in 2004. >> he could be intimidating because people knew he was a boxer and he had more of a reserved personality to him. but if you went up to him, he talks to you right back and he was very friendly. >> reporter: but were there any clues of the violence to come? >> he never expressed any desires to harm people. they did respect life at one point. they were friendly. >> reporter: after high school tamerlan attended bunker hill community college, studying accounting. until 2008, when he left college. but he continued to pursue his dream. >> good? >> mm-hmm. >> reporter: boxing trainer eddie bishop met tamerlan at a tournament. >> he was a fighter that had a lot of skill and a lot of -- a lot of ability. >> reporter: but bishop questioned whether tamerlan could ever become a boxing champ. >> he had all the skill, but he lacked the heart, the fundamental ingredient to make you a champion. >> reporter: the tsarnaev family is from war-torn chechnya and