... some of the nifty opening scenes from the US Army's "Big Picture" documentary series 'Sharper Sword and Stronger Shield' episode. Like everyone else in the Space-Age the Army had 'future-fever' and upped the gee-whiz ante by forecasting saucers as the next step in combat mobility. (Take that you hordes of Red tanks and waves of Yellow Peril!)
... this (military) flying saucer craze was a direct result of out of control optimism for the Canadian 'Avrocar' project. A dismal failure that instead of growing-up to be a super-duper Cold War interceptor; just seemed to cruise a few feet off the ground dusting off a parking lot !