I'm Marv Smith. I was an ADJ in the Power Plants shop in Heavy 5 from 1967 to 1971. Made 2 West Pacs with them. Glad you joined the group!
Go to Military.com. There is a site set up for Heavy 5 there and they have around 75 guys from Heavy 5 on that site. Some from the time we were in.
We live in upstate New York during the summers and in Oro Valley, Arizona for the winter.
Nice looking F-4! Is that your grandson with you?