In the pilot to the show and one episode starring guest Frank Marth the Heroes make fake German money. In a later ep they uncover a counterfeiting ring by the Germans themselves, one that makes phony American money, and Hogan and Co. never mention their own counterfeiting activities. Think of the possibility. The heroes could have used the phony Deutsche money they make and put it on the person of the German counterfeiter and had him declared a traitor!