When you put the threat of a spectacular attack on the airport together with yesterday's report: "FoxNews noting unconfirmed reports from within Baghdad that announcements are being made inside the city that people should walk toward the airport. Don't ask me . . ." what do you come up with?

Maybe they're going to try herding civilians towards the airport. The Fedayeen could start shooting, forcing us to shoot back... Or, they could release WMD, or have suicide bombers in the crowd, or release a huge torrent of water, or try to blow up the airport using the tunnels under it, or...

Or, it could be a diversion, or just more BS.

UPDATE: The Beeb discusses the human wave and WMD ideas.