Warbloggers Hate the Troops

Warfloggers are suddenly flogging a story alleging sarin nerve gas has been found in Fallujah. They seem to think this might finally prove that Saddam had banned weapons. However, those of us who inhabit the reality based community know that if there are chemical weapons in Fallujah, they almost certainly come from weapons bunkers which were under UN seal until the US waltzed in and started the Great Iraqi Free Weapons Bazaar.

Question for Warbloggers: If there are possibly chemical weapons in Fallujah, are the US troops in chem gear? If not, why not?