Select a class of weapon of mass destruction or an emerging threat and lay out a scenario in which terrorist could employ this method, the effects caused by such an event.

In a 2- to 3-page paper, please address the following:
Select a class of weapon of mass destruction or an emerging threat and lay out a scenario in which terrorist could employ this method, the effects caused by such an event, and response measures.
Then look at the flip side of that coin and lay out some preventative measures and some mitigation tactics to help cope in the event it did happen.