Case Shows Contradictions of Army Rules KHOST, Afghanistan -- Pfc. Monica Brown cracked open the door of her Humvee outside a remote village in eastern Afghanistan to the pop of bullets shot by Taliban fighters. But instead of taking cover, the 18-year-old medic grabbed her bag and ran through gunfire toward fellow soldiers in a crippled and burning vehicle. Vice President Cheney pinned Brown, of Lake Jackson, Tex., with a Silver Star in March for repeatedly risking her life on April 25, 2007, to shield and treat her wounded comrades, displaying bravery and grit. She is the second woman since...