with samantha power's comments. >> a bold statement to be sure. we just did get a piece of new information in. there have been a lot of questions about whether americans were on board this flight, mh-17. this is what we now know. that no passengers checked in using u.s. passports. no passengers checked in using u.s. passports. the united states now looking further into that. that a very many just coming in at this moment. i want to bring in richard quest right now our aviation expert. we heard that this investigation may be hampered by the russians. the military evidence might be obscured, hidden, moved in fact to russia. what about the scene of the crash itself, the crime scene, the investigation scene that we now believe is under control of