U.S. Army new 16-inch gun roars into action.

U.S. Army new 16-inch gun roars into action. One of the United States Army's giant new 16-inch guns mounted on barbette carriages roaring into action during the spectacluar "dress parade"of arms held at the proving grounds, Aberdeen, Maryland, for 5,000 members of the Army Ordnance Association. This 16-inch monster hurled 2,100 pounds of steel and high explosive for 30 miles across the waters of Chesapeake Bay. for the first time since the U.S. Army has held these annual demonstrations, foreign military attaches were barred.