Memorial Day: Serving World War II America in combat and at home

My dad, Fred, is working on a new oxygen regulator that his younger brother, Frank, may very well use at some time. (Dad had a deferment from military service because of his defense work.) He updates his brother on the improvements being made on this essential piece of equipment for airmen, or order to save more lives. It's an example of how two brothers were closely bound in World War II service, even though only one was actively in the military.