My grandfather passed away on Friday and, upon going through some old photos, I found this one stand out in particular.
He (far right) worked for most of his career in the Air Force, serving as a recruiter before and during Vietnam. As best I can tell, this photo was taken c. 1962 or 63, probably in Ohio, but I have no idea what its context could be. I assume that's an astronaut on the far left, particularly given the fact that it's being filmed.
I'm not entirely sure if this is the right subreddit for such a thing, sorry if it's not.
Your grandfather is standing across from David R. Scott, who flew with Neil Armstrong on Gemini 8.
Here's a nice photo to compare faces with.
Edit: My condolences on your grandfather's passing, I had actually missed that the first time I read your question. He must have had an incredibly interesting life if he found himself in the 1960's important enough to be on TV with the crew of a Gemini mission.