You picked McClelland. Is he not a credible example? If not, do you have a better one?
I know people who made claims about UFO's and even abductions, and they weren't fired from their jobs. In fact, some of them profited from their claims.
Did McClelland get fired? I notice that he charges fees for his UFO information.
Did they give a reason for not saying anything sooner? Which astronauts, and what were their claims?
I also couldn't help but notice that a lot of Pastors also get paid for making their claims. In fact, have you seen some of the mansions they live in?
http://www.rawstory.com/rs/2013/10/megachurch-pastor-defends-megamansion-as-gift-from-god/
But you are right, people should not make money off of what they believe. In fact, every single NASA researcher shouldn't charge anything for their research. They should all work for free. ((sarcasm))
As for Wehrner Von Braun's claims ... Braun was a firm believer in Intelligent Design and Creation. He was a devout Lutheran all of his life. He even claimed that his belief in Intelligent Design enabled him to understand science. Wehrner Von Braun was a NAZI during WWII and was a V2 rocket scientist. After the war, he was "recruited" by the U.S. in a project called "Operation Paperclip".
http://en.wikipedia.org/wiki/Operation_Paperclip
At the time, Von Braun was the top researcher in the pioneering days of space travel. It was his research and under his direction that enabled man to land on the moon.
Clark C. McClelland was a close friend of Wehrner Von Braun. They worked alongside each other on the Apollo and the Space Shuttle missions (
http://www.space.com/12085-nasa-space-shuttle-history-born.html ).
In McClelland's book, that he is, of course, receiving money for (and I had to pay for my Bible btw), he claims he had a conversation with Wehrner Von Braun about the Roswell Incident. Wehrner Von Braun told him he was called to the crash site, and observed that it was an alien craft and that yes, there were dead alien bodies.
The initial reports of the Roswell Incident that were in the newspapers at the time indicated the same exact thing. It wasn't until the military stepped in that is was "officially" declared to be a hoax and that it was not an alien craft, but a weather balloon. The "official" story of the Roswell incident claims that the bodies witnesses saw were actually crash test dummies.
Now why they would put crash test dummies on a weather balloon is anyone's guess. But . . . a mortician is never called to make hermetically sealed coffins as to not damage tissue for crash test dummies either. The mortician's name was Glenn Davis. The rancher that owned the property where the ufo crashed saw the bodies as well. So ... people were coming forward back then too.
Now, I know you are former military. You must be familiar with the handling of classified information then? What happens to someone who releases classified information? Do they end up like Bradley Manning?
The whole "weather balloon" story was just a cover, as Brig. General Thomas DuBose, commanding officer of the 8th Air Force at Carswell AFB attested to. He was the highest ranking Officer during the Roswell Incident. Even he has come forward and said they were aliens and it was a UFO:
https://www.youtube.com/watch?v=T4yVEEff8Gw
http://kevinrandle.blogspot.com/2007/05/dubose-affidavit.html
The material shown in the photographs taken in Gen. Ramey’s office was a weather balloon (Ramey crouched, with DuBose seated and the wather balloon). The weather balloon explanation for the material was a cover story to divert the attention of the press.