giving the sermon began to talk about dr. martin luther king, this man got up and objected. you know, he raised his voice which is against the etiquette of the sermon, and people objected to it, and -- and some people might have even asked him to leave, you know, the mosque, if he didn't, you know, like what he was hearing. >> but there were no indications that tamerlan or younger brother dzhokhar could be dangerous. >> cared but, cared about people around them and they cared for other people making great choices and creating opportunities for themselves like they were trying to do for each other and for themselves also. it just doesn't make sense. >> tamerlan's high school friend louis vazquez later coached dzhokhar in soccer at the cambrdige rindge and latin school. >> these two guys had leadership traits, one was a leader of the family and cared for them and the other was a social leader among his friends an his team.