We knew from a past episode upstate that Gibbs was named after the man who used to own the store with his father. It was nice to get closure on that aspect, even though some parts were not all that realistic. To begin with, Leroy Jethro Moore looked younger even than Gibbs, let alone Gibb's father. Certain things in this show have never rung true about the supposed environment in an small upstate Pennsylvania town, but that is poetic license. The age discrepancy was jarring, though. The NCIS universe lags a little behind reality, but a WWII veteran should still be no younger than 80 years old.
Gibb's father seemed revealed as a truly selfish man, perhaps even a little cruel. I hadn't seen that in him before, and it was sad.