I'd be more worried about all the DNA JR left all over the store. He was in the military, so he's likely to be in a few databases. Not to mention the fact we're all criminals, so probably in CODIS too.
ETA: I was going to say: well, I know that, but Cyril wouldn't... then realized I am playing a lawyer who specializes in criminal defense (& personal injury). Of course he would know that, guess I should say something IC about that.