In the Call of Duty: Black Ops III version of Verrückt, a radio has been found.
Radio 1[]
Doctor Monty: "'Electroshock therapy. Chemically engineered beverages. Hordes of Undead Nazis. Find the power to unite and send them back to their graves!' Can you believe that's how I actually described it back then? It was an asylum! It was also a horrible, terrible, grim, depressing place! I'd give you a full explanation of everything that happened there but it would only be horrible, terrible, grim, depressing. Oh, fuck! You weren't there either! But then you were."