Lady Snowden, please accept my sympathies for the loss of your grandfather. But, could you elaborate on the UFO stories?
Sure! Grampy swore there were two incidents in his time with the Air Force that he saw a UFO. The first was during his training in New Mexico. He was up in a jet that the mechanics had asked him to check out (he had a neat ability to diagnose issues with mechanical things based on the noises that he heard or didn't hear). While up in the air, he saw an orange light (I think) headed towards him, extremely fast. Faster than he would have been able to acheive in the jet he was in. It turned out to be a long, cylinder shaped craft (think a cigar shape). It blew past him, almost at his wingtip, turned around behind him, blew past him again on the other side of the jet, then disappeared. Not "dwindled into the distance", but just...stopped being there. Grampy and the radar guy both saw it, but the radar guy refused to believe what he'd seen, so nothing happened. No reports or anything.
Second time was in Miami, FL. UFO showed up on the radar, and didn't respond to any hails. Grampy and two other airmen were assigned to go up there, see what it was, and escort it to land if necessary. They had no trouble finding it, since it was just a giant metal ball hanging in the air, not moving. They moved to surround it, and then it accelerated straight up into the sky. They tried to follow it for a bit, but weren't able to. It was moving too fast, and going too high. When they got back to base, they were asked to report on what they'd seen. When they'd done so, Grampy's commanding officer informed them that they were obviously mistaken, they had not seen anything, and the radar report was a mechanical issue with the radar itself, do you understand gentlemen? They all agreed with the commanding officer that clearly nothing had actually happened, and naturally the story was all over the base in about two minutes.
That UFO appeared several more times over the course of a few weeks, but Grampy was never called again to go investigate, so he didn't know much more than that.