Very cool. I can't wait 'till my oldest is ready to go. She's only 3 now and I've been trying to talk the wife into letting me take her next season to private land, just to watch Daddy. I doubt she'll be able to sit still long enough to get one close, but maybe we'll be able to see a few, and that's good enough for me.
OP, how old was your son the first time you took him out? How old when you were teaching him how to shoot, and what rifle did you get him?