Although he wasn't on his deathbed when he began to blow the whistle on the U. S. government's UFO-E.T. cover-up, retired Army intelligence officer, Jesse Marcel, Sr., did point the way for others to come forward with "deathbed confessions" as to their role in, or knowledge of the cover-up.
Had he lived, and talked on the record, for several more years, Marcel doubtless would've become even more of an asset to today's researchers trying to pave the way for a full-scale congressional inquiry into the cover-up.