there's a great deal to be learned yet before they can really decide what the motive might have been. >> and they'll speak to his family hi friends. >> family friends, colleagues neighbors, anyone associated with him, certainly. >> the u.s. attorney in chattanooga says they're investigating this as an act of domestic terrorism, does that rule out the possibility that it could be international terrorism? >> no, it's an unnecessary thing for them to investigating. what they are investigating is why did he commit the murders. the jurisdiction for the fbi would apply just for the murder of the marine corps, because they're u.s. government representatives and they're military officers performing duty but not in combat. that's why. on the left part of the screen those are bodies down there, we assume the bodies of those four u.s. marines who were shot and killed just a little while ago in chattanooga. we're seeing these aerial photos coming in right now. stand by. i want to go to our white house correspondent jim acosta. i take it jim, the president