Several Circular Objects Surrounded Plane
6 flying manhole covers circled plane of stunt pilot.Size, according to Frank Edwards, was 3' to 4' diameter, approached to within 10'.
Bert Acosta, a noted stunt flier, had a sighting of several circular objects that surrounded his plane, then sped away.
This occurred while he was en route from Wichita, Kansas, to Colorado Springs, Colorado.