Good footage of American aircraft including the Flying Fortress bomber, United States of America.
Army air day in the United States of America.
Full titles read: "UNCLE SAM PREPARED"
L/S's of numerous fighter aeroplanes taking-off from an airbase. Very good L/S of the Boeing Flying Fortress bomber taking-off. Aerial shots of several bombers in flight. The commentator concludes at the end of the film "America's Air Force writes a stream lined warning in the sky... as she prepares to defend her own shores.... and maybe more than that."