So so sorry for your loss. I really feel your pain and I know posting this can't have been easy. I lost my father 2 months ago - he was also in the air force - and haven't been able to make a thread like this yet - it still hurts to think about and I feel if I don't do it properly I'm not doing him justice.
Stay strong and be there as much as possible for your mum. Looks like you're on the right track - remember the great moments and good times and legendary things he has done. It doesn't take the pain away but it makes it easier to face.
Sorry to hear about your loss. I seem to be doing ok. I think the only time I broke down completely was when I was bringing his clothes to the funeral home and I had his hat in the front seat with me. The plan was to bury him with the hat. But man I cried the whole way there and was not able to give them the hat. I called Diana to ask if it was ok for me to keep it and she said of course it was. That killed me for some reason.
I cried pretty hard when I told my oldest son. But for some reason it's people's amazing acts of kindness that have made me tear up more than anything else. We will have a bunch of people at the house and I think once it quiets down it will hit me harder.