I had a dear old friend that was a B-17, then a B-29 commander. He was training in the B-17, and instead of getting orders to England, he got orders to report for B-29 training. He was on the way to war when the war ended. He then was based at Roswell. I remember him talking about how the "incident" was not so secret. He walked in the hanger and looked at everything like everyone else did. He said he never saw alien bodies, just crashed airplane parts.
While he did not have a current medical, he flew (with another pilot) until a couple months before he died at 88. He didn't take over the controls at altitude, I mean he flew from start up to shut down.