So effective has a “walking” pistol range at a Miami, Fla., club proved, that the U. S. Marine Corps plans to build similar ranges to train its sharpshooters. Forty targets are mounted on a 2 1/2, ton traveling crane 160 feet long. The targets advance from the rear of the range, 50 yards away, right to the firing line. A five-horsepower electric motor operates the crane. Another novel feature is an “edging” arrangement operated by a compressed air cylinder. Only the edge of the target faces the firing line before a match begins; then at the touch of a pushbutton all 40 targets swing synchronously in a split second to face the marksmen. This acts as a foolproof signal in rapid-firing contests and trains the marksman to be steady and quick on the trigger.