The U.S. Army is becoming a major buyer, and user, of guided missiles. In the next year, the army will spend nearly $2 billion on development and procurement of missile systems. Most of this is for missile systems that are not needed right now, but would be if the right foe were encountered. For example, $480 million is being spent on Patriot Pac 3 anti-missile missiles. The $3.3 million PAC 3 missile is smaller than the cheaper anti-aircraft version (PAC 2), thus a Patriot launcher can hold sixteen PAC 3 missiles, versus four PAC 2s. A PAC 2 missile weighs...