The Blaze reports Thursday that Dugway Proving Ground, an Army base about 85 miles southwest of Salt Lake City, was locked down for several hours because a small amount of toxic nerve gas was unaccounted for. According to a statement released by the Army, less than a quarter teaspoon of deadly VX nerve agent went missing. VX, the most toxic nerve agent ever developed, is an odorless, colorless, tasteless liquid that can kill within 15 minutes of exposure, according to a Material Safety Data Sheet (MSDS). The agent, first developed in 1952, has been designated a "weapon of mass destruction."...