Precisely how many MRAP II vehicles, the next class of blast-proof trucks designed to protect against explosively formed penetrators, does the Pentagon want? The request for proposals issued to industry on July 31 includes some requirements that appear staggeringly large, even for a program that the defense secretary has placed on the fast track as the Pentagon's No. 1 priority -- and for which Congress has essentially pledged a blank check. On June 28, the Joint Requirements Oversight Council endorsed...