There’s nothing to drill. So far, NO EVIDENCE. I once spent a lot of time drilling down into the 1947 Roswell incident, and learned that there was nothing there.
Yes, there are UFOs, observed by many credible observers. What they actually are remains a subject for speculation. As the late Dr Michael Crichton remarked, the religious impulse is hard-wired into humanity, and belief in aliens is one way it is expressed. It’s probably a less destructive way than belief in the climate change crisis hoax.
Just because you haven't seen evidence doesn't mean there isn't any or that it isn't forthcoming.
BTW, I have drawn no conclusions one way or another regarding this matter. I am still just observing.
I suggest that drawing a conclusion on a lack of evidence for or against is a "belief."
Nolan claims to have recovered material. What kind of material is it? Is it metallic? Is he examining its molecular structure? Is it organic material? Is this claim even true?
As an aside, Nolan was threatened with the withdrawal of his tenure a few years ago over this matter because the dean of the Medical School thought he would damage its credibility and its ability to maintain funding. The dean apparently came to the conclusion that Nolan's work was within his academic and professional purview and that he had no recourse against Nolan's tenure.