"Throwing the switches to activate the Greater St. Louis Defense Telephone System, left to right are, Charles C. Pervier, of Southwestern Bell Telephone Co.; Brig. Gen. H. F. Schiltz, of Army Material Command; Brig. Gen. E. Donley, of Army Mobility Equipment Command, St. Louis, and Col. B. T. Brown, Communications Chief, Army Material Command, Washington, D. C.