the mourners line up in medford, massachusetts, to say good-bye to christal campbell, one of the three people killed in those bombings. and the blame game starts. did not find any terrorism activity at the time. we are live with more on that particular part of the continuing investigation. good afternoon, scott. >> good afternoon. a great deal of focus right now on the medical center and where dzhokhar is being questioned. prosecutors have been preparing a criminal case. he will not be tried as an enemy comba comb combatant. and video reportedly shows tsarnaev placing the bomb at the site one week ago. investigators are continuing to go over the boat were tsarnaev hit out. the man who has the most answers is no longer alive to give them. his older brother was killed in the police shootout on friday. we know now that two years ago he was back in russia. that's raising a lot of question s. >> this is the fifth case that i'm aware of where the fbi has failed to stob someone who became a terrorist murderer. wanting to know what went wrong. tsarnaev appears to be the fifth person to partici