make of it. the etchings read, better off this way and, elf my weapon. investigates talked to his friends, family, pored through his compute, possessions, but law enforcement sources say nothing points to a specific motive. >> and, joe, we were speaking with an official of the navy yard yesterday. police are criticized for the response to the shooting. are they explaining why he was on the campus and inside that building for so long before this was resolved? >> reporter: well, it's pretty clear there were a number of active shooter teams on the scene and there are some questions about whether the united states capitol police's emergency response team should have been allowed inside the complex. they were turned away. there's an investigation into that. but there are a lot of different units inside. navy officials say the damage inside the building is so