Sarin gas: How does it work?

Now watching

Next video starts in : 7 Play

Sarin gas: How does it work?

Sarin gas: How does it work?
Replay video
Up next

Stephen Colbert: Your Backstage Pass to the Finale

Unlock your personal NFL Now stream by signing in to NFL.com

Sarin gas: How does it work?

by FOX News Videos 2:34 mins

Dr. Marc Siegel weighs in

View Comments (1)