630 hours? not that that has anything to do with sanity, but that surprises me.
even though I believe many politicians are stupid, I don't believe any would be stupid enough to announce this without unassailable evidence, and yes, it is just possible they know more than we do.
and that they are not telling everything they know.
in fact, i believe its a certainty.
they would ask the fbi for help because (according to cnn) the co-pilot was trained in arizona.