Here through an assembly of facts, and facts alone, is an examination of the Hemisphere position. Our airpower and the need for a third arm; the geographic key points to be defended; the dubious potentiality of invasion; the fighting strength of dictator countries; the organization of our army and navy; armaments; ships. Aid to Britain and Hemisphere defense not mutually exclusive. Good statistical survey of the strengths and weaknesses of the country, as groundwork for discussion. There seems to be no great challenge or original contribution.