The M-7 is the Army's newest tank destroyer and is really a "killer." Being tested for desert warfare at Iron Mountains, California. It carries both a 105mm Howitzer and a 50 caliber gun. Lieutenant M. Hutchison of Enterprise, Alabama is at the extreme right. Corporal L. Roberts from Graham, Texas is at post behind the Howitzer. Corporal Downing, whose home is Dekalb, Missouri, is in the turret