Big metal box in a very public place? I feel like I&#x27;m channeling Bruce Schnier here but I&#x27;ll say it anyways... If I was a bad guy and wanted to plant something very bad in plain site, this is exactly how I&#x27;d do it. How long do you think it would take the good guys to figure out it&#x27;s evil? I&#x27;d think hours at least. This is something like I&#x27;d expect to read in that Movie Plot contest he runs every year.