Project Blue Book Case File
Challange, CaliforniaJuly 1956
Summary
On July 22, 1956, at 10:05 a.m. near Challange, California, a civilian witness reported observing one round object the size of a dime, colored red and green, seen through 7x binoculars. The object was moving slowly and existing behind a hill. The sighting lasted about 25 minutes. No positional data was recorded. The Air Force concluded the report involved insufficient data for evaluation, noting the object could possibly be a balloon, aircraft, or astro body.
Reported location
Challange, California
Date of incident
July 1956
State / country
CA / US
Page count
3 scanned pages
USAF evaluation
unidentified
Microfilm
T1206, Roll 25