"On Decenber 7, 1941, Japanese planes bombarded Pearl Harbour, which iss 3900 miles from Japan. The details of that raid are too fresh in our minds to need recounting here, but the implications should never be forgotton. For the first time sice the advent of the airplane as military weapon the American nation as a whole has been brought to realize that the danger which lurks in the skies is one which may confront us anywhere at any time. Civillians in all parts of the country are now asking, "How can we protect our persons and our property from this deadly menace?..." --Taken from Preface.