watched it turn to ash. that's just the start. in mexico city there may have been photographs of oswalt taken by the cia and tape recordings with the soviet and cuban embassies and that would disappear, as well. >> 50 years since the president died. do you think what we will ever really know exactly what happened, particular lay about his time in mexico city? >> that's a good question. maybe. i'm not sure we'll get it on the 50th anniversary. the question is what does russia have in their archives? a lot of materials in a lot of other places and the soviet union contributed things but there might be more documents down the line. as of now, i think this whole anniversary is going to end and people will still be unclear on who killed kennedy, although i would say 70, 80% of scholars think oswalt acted alone. >> phil, do you think there was