The report came to no conclusion about what the UAPs were, based on a lack of evidence,[50] though in a limited number of incidents, UAP reportedly appeared to exhibit unusual flight characteristics, including high velocity,[51] breaking the sound barrier (hivelink)
breaking the sound barrier without producing a sonic boom,[52] high maneuverability not able to be replicated otherwise,[53] long duration flight,[54] and an ability to submerge into the water.
(hivelink)- or observer misperception, and require additional rigorous analysis. tid:2929 (1) (hivelink)
- Some of the UAPs appeared to move with no discernable means of propulsion,[57] and it was noted that the alleged high speeds and maneuvers would normally destroy any craft.[54] These observations could be the result of sensor errors, spoofing, or observer tid:2928 (20) (hivelink)
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