The report also stated that "UAP probably lack a single explanation", and proposed five possible categories of explanation: airborne clutter, natural atmospheric phenomena, US government or industry development technology, foreign craft, and an "Other" ca (hivelink)
and an "Other" category.[57]
The report raised concerns that the UAPs could be a safety issue, with regard to a possible collision with US aircraft, and that they could pose a security threat if they were foreign craft gathering information about the US.
(hivelink)- The report also indicated that, of the sightings reported, all except one (confirmed as a weather balloon) lack sufficient information to attribute a specific explanation or explanations. tid:2933 (1) (hivelink)
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