A very intriguing aircraft was been reported in the late 1980s. Some observers claim to have witnessed a vast black flying wing, estimated at between 600 and 800 feet in width, passing silently over city streets in California. The craft moved so slowly one observer claimed that he could jog along with it. The aircraft reportedly executed bizarre maneuvers in which it stopped, rotated in place and hovered vertically, pointing its thin trailing edge toward the ground.<1> This vehicle's unlikely gyrations suggest that it is distinct from the other sightings, and could be a lighter-than-air craft pushed by slow- turning propellers.<2>
<1> Pope, Gregory, "America's New Secret Aircraft," Popular Mechanics, December 1991, page 109.