und in the U.S. Most of the artillery shells and other weapons contain the choking agent phosgene and one holds an agent that causes a reaction like tear gas.??? (Associated Press; 15Apr08) <a href="http://ap.google.com/article/ALeqM5hztD07JJjsSEdK917nZd602wL-0wD902GUB00Ground">http://ap.google.com/article/ALeqM5hztD07JJjsSEdK917nZd602wL-0wD902GUB00Ground</a> broken on facility to destroy chemical weapons [Pueblo, Colorado]???Construction has begun on a facility to neutralize a stockpile