[Xphantasos]

Question regarding some of the possible chemical agents that might be used... are they "heavy" enough to stay around once deployed? Or is it being witheld at the moment due to reported desert winds and sand storms that might blow the stuff back right at the Iraq troops?
Thanks.

[Coop]

Question regarding some of the possible chemical agents that might be used... are they "heavy" enough to stay around once deployed?

It completely depends. Some agents are persistent (stay active for a while), while other non-persistent ones don't last long at all once dispersed.