A while back I found the tape of the interview that my wife (then girlfriend), two classmates, and I did with my grandad (that I referenced here). I had it converted to a wav file. Listening to it I can hear in his voice that he did not want to be talking about it. I'm thankful he agreed to it though.
I sure do miss him. Wish I had something like this with my other grandparents.
Here is a short clip about when he found out he would be in the group guarding President Roosevelt.