The Pentagon is preparing to launch a new competition for Mine Resistant Ambush Protected vehicles capable of stopping explosively formed penetrators, effectively opening the field to new manufacturers in a race for a piece of the possible $20 billion-plus blast-resistant vehicle program that since January has been limited to a handful of companies. The Marine Corps, which is leading the MRAP procurement for the U.S. military, is preparing a new solicitation for industry seeking vehicle designs capable of stopping not...