U.S. Army Spc. Theodore Durbin, right, installs the driver's side door on his Humvee in preparation for the Multiple Integrated Laser Engagement System to be installed at the National Training Center.

FORT LEWIS, Wash. - A prodigious U.S. Army battlefield capability recently got cheaper and more lethal. The first Advanced Gunnery Training System for the Stryker Mobile Gun System was unveiled June 5 ...