U.S. Government UFO Document: “PROJECT 10073 RECORD CARD: DATE - TIME GROUP: 28 Jan 53/ LOCATION: Corona, California”

(Project Blue Book, U.S. Air Force, Washington, D.C.)

Source: NICAP.org

Quote from the document:
“Airman [USAF T/Sgt. George Beyer, according to NICAP.org] [ground/visual case] [Source]

Five round green ball-like objects, each 25' in diameter traveled at an estimated speed of 150 mph at an altitude of approximately 2,000'.”

Project Blue Book listed the case as “UNKNOWN.”

http://www.nicap.org/docs/530128corona_docs.pdf

http://www.nicap.org/reports/530128corona_report.htm

Wikipedia article: “Corona, California”:

https://en.wikipedia.org/wiki/Corona,_California

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realtvufos.blogspot.com/search?q=January+1953

realtvufos.blogspot.com/search?q=1953

(ufocasebook.com image)

Corona, California (wikimedia.org)

(wikimedia.org photo)

Satellite photo of Corona, California (tageo.com)

(tageo.com photo)