Hey so I've been watching this series called "Elementary" with my wife, and I noticed this strange yellow and black diagonal bicolour with a white circle as the charge. The prison and company which runs it are both fictional, but I'm wondering if the flag is real. You can see next to it is Old Glory and an even weirder black flag with white text, which never properly unfurls, so its hard to get a good look at. Thanks for your help, fellow patriots. God bless.