Is it weird that Robert is more bothered by the fact they're dredging things from a river with some kind of energy device than by the fact it was the Foot Clan? Not that the other part doesn't bother him either.

"... I suppose this fact was, er, less than known by the curators of the museum?" Because surely they wouldn't keep a lethal weapon on display on purpose, right? Right. Surely not. He's not sure anymore.