Documented sightings reported in 1949.
A disc-shaped object repeatedly appeared over a searchlight in Norwood, Ohio, tracked by Army instruments and witnessed by hundreds over several months.
Pluto discoverer Clyde Tombaugh observed a formation of yellowish-green rectangular lights moving silently across the New Mexico sky, baffling one of history's most accomplished astronomical observers.
A 1949 Los Alamos conference transcript in which Manhattan Project physicists tried and failed to explain the 'green fireball' wave over the Southwest's nuclear laboratories. Released via PURSUE Release 04.