Dept. of DefenseUnresolvedAmbiguous
Unconventional object oscillating near Muroc AAF — aluminum surface, slow movement (Incident #2)
Jul 8, 1947Muroc Army Air Field, Muroc, California480s
Analysis — our summary
At approximately noon on an unspecified date in July 1947, Lange Shoops (Office of Chief of Engineering Division) observed an object at 5-8 miles distance from Muroc AAF. The object had an unconventional shape, appeared metallic with an aluminum-colored surface (sun reflected), and moved from an intermediate altitude in an oscillating fashion, nearly reaching the ground surface before climbing again. The object was observed for approximately 8 minutes before moving off slowly in the distance. Evaluation: unresolved.
As reported — verbatim from the document
“It appeared to be metallic because the method in which it was flying the sun was reflected from an apparently aluminum colored surface. The object moved from an intermediate altitude in an oscillating fashion, almost to the surface of the ground and then started climbing again.”
Analyst notes — caveats & confidence
OCR quality is moderate. Date as July 1947 inferred from checklist format. Single witness, no corroboration noted. Observer was engineering division personnel with relevant technical background.
Provenance
Source document38_143685_box7_Incident_Summaries_1-100.pdf
Document typeincident summary collection
Reporting agencyDept. of Defense
Source pages209
DeclassifiedFirst public at this release (2026)
Held classified~79 years (≥, to this release)
Extraction confidence ModerateHow cleanly this record could be parsed from the source — driven by legibility & redaction. It is not a measure of how credible or anomalous the sighting is.