http://www.msnbc.msn.com/id/41288977/ns/us_news-life/SALT LAKE CITY — A Utah military base that carries out tests to protect troops against biological attacks was locked down for nearly 12 hours overnight because a small amount of a nerve agent was unaccounted for.
It reopened early Thursday, officials said, after the missing vial was located.
The military said in a statement Thursday the amount missing was less than one fourth of a teaspoon of VX nerve agent, which affects the body's ability to carry messages through the nerves.
