Numb3rs Fanfic Finders

I'm looking for a short Alan, Coop and Don fic called "Enemy of the Movement." It was about Alan showing Coop some photos of Don as a child and one was of the day Alan got arrested as mentioned in "Protest." Don was with him, dressed in bell bottoms and all and he had to go along to the station as Margaret wasn't there. He made friends with the cops and Alan called him 'an enemy of the movement.'

I have tried ff.n but I can't find it there and I don't know of any way to easily search all of the lj communities that host fic.