Does Congress really have a ‘need to know’ about UFOs, especially if said UFOs are not ET?

All this talk of the upcoming Congressional hearing regarding UFOs begs the question: Does Congress, or, for that matter, the public, have a so-called “need to know” when it comes to UFOs? https://www.independent.co.uk/news/world/americas/us-politics/ufo-hearing-house-intelligence-committee-b2075745.html

I say that because I’m working on the assumption that the oval “tic tac” object that seemingly defied the laws of physics and other craft that have exhibited similar anomalous behavior are actually above-top-secret Pentagon programs, NOT space aliens.

So, then, assuming the UFOs are not ET but actually a breakaway, quantum leap technology possessed only by the U.S. military, why then would the Pentagon divulge this information to the public? 

As far as I’m concerned, this secret goes all the way back to the end of World War II, when the United States either acquired the initial breakthrough from the Germans or developed it themselves. Either way, that’s when it all began. So, assuming this has been a platform possessed solely by the U.S. military all this time, by now it would be far more advanced than it was originally.

So, we’re talking about a 75-year conspiracy. Obviously a crazy, unprecedented situation. But it’s either ET or not.