User blog comment:Griever0311/Ask A Marine Part Deux/@comment-1260687-20100317190450

We had to wear it for a few days due to some bad intel after some insurgents blew up a couple of ammonia tanks in a factory on the outskirts of Karmah, and it was about the most unpleasant experience of my life. Any time ran across old bunkers or storage facilities, we wore it as well, because we didn't have any idea about what was inside of them.