I trust you are aware that the Mexican Airforce sighting has been explained very well, and and the Gulf Breeze sightings are generally accepted to have been a hoax; those sightings and the Phoenix Lights can not really be considered compelling cases. We also have a good thread on Rendlesham on this site, which seems to indicate that some of the accounts of that incident are unreliable, while other more contemporary accounts may point in the direction of a number of mundane explanations.
So at least three and perhaps four of the 'best case' incidents are less than ideal evidence for anything out of the ordinary.

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