Tshirts(was Drug Joke

I've got a recently good idea for a shirt I've been working on for a bit, but my funding fell through. Anyone want to bank an initial run? fyI, on my recent return from Boston I sat across from a guy wearing a Secret Service logo'd polo shirt with the acronym 'C.A.T.' on it. Anyone know what it stands for? He went to sleep before I could bother him. -eric