1.  How were 24 soldiers and their 2 interpreters exposed to chlorine gas this week in Iraq? Be specific.

2.  Why do you think the soldiers, who are members of a U.S. Explosive Ordnance Disposal team, did not check the cylinders before blowing them up?

3.  Why doesn't Lt. Col. Patrick Mackin think that the presence of the chlorine indicates a renewed trend by al Qaeda to use it in their attacks?

4.  a) What is Operation Raider Harvest? 
b)  What progress has been made since the start of the operations? 
c)  Why are tips from local citizens expected to increase?