All cases / From orbit / Minneapolis balloon crew
October 11, 1951, 6:30 a.m.
Minneapolis, Minnesota, USA
"dark underside and a halo"Shape words from the Project Blue Book summary
The flight crew saw a brightly glowing object with a dark underside and a halo. It came in high and fast, slowed, climbed in slow circles for about two minutes and sped off east. A second object, confirmed by ground observers with a theodolite, crossed the sky in seconds.
General Mills balloon researchers: engineer J. J. Kaliszewski, aerologist C. B. Moore, pilot Dick Reilly in the air and Doug Smith on the ground
Filed by Project Blue Book as unidentified.