Since there are numerous reports spanning decades and even dating to the 19th century, before manned flight, and these reports come from all over the globe and the descriptions involve similar events and very similar observations between widely spaced events then it follows that these "UAPs" are not all likely to be related to a project operated by the US military.
I keep an open mind about everything that I don't understand until I have the data needed to form an opinion. I am not convinced that decades of reports from educated and uneducated people living in widely separated regions that all describe similar situations can all be related to secret operations carried out by one nation's military. I have a hard time branding all these people as delusional or as liars when I have never met them. I am also not qualified to assign any of this to any category except "unexplained and interesting enough to study".