There was absolutely nothing to keep Zamora from very clearly discerning the red 'insignia' because he observed it it with his glasses on and from, first, only 50 feet, and, finally, about 35 feet. I know the distances accurately because I paced the distances off at Hynek's request, when Zamora showed Hynek and me his closest positions.
Before I get into the two additional 'smoking guns' confirming that the red 'insignia' Zamora saw was actually an inverted V with three lines across it, please allow me to address another matter on which there have been consistent lies or distortions: WHERE ZAMORA 'HIT THE DIRT' in a prone position. Most all accounts say that Zamora didn't 'hit the dirt' until he was well on the north side of his patrol car, with the car between him and the object hovering about twenty feet above the ravine bottom. THAT IS NOT ONLY FALSE BUT ILLOGICAL.