This story is gen, I think. I don't remember why but the boys are in hospital, I think and Alan and Larry are in a safe house. Alan is desperate to get to Don in the hospital, so he attacks an FBI agent guarding them with a frying pan so they can get away.

I think the bad guy was a senior FBI figure - the AD's deputy, maybe and there's a scene where the AD then offers Don the deputy position.

Alan apologises to the guy he attacks and invites him and his wife to Thanksgiving at Charlie's house, along with Don's team.

You'd think knowing all that, I'd know the title and author, but sadly I don't!

So any help much appreciated, please!