 Weinberg was willing to be the first senior National Security leader to participate in the United States wartime simulation game as long as Karber designed a secret way for him and the chairman of the Joint Chiefs to do so and as long as he designed the game to test the United States war plans and as a learning exercise and experience for the secretary.Weinberg worried that the "fishbowl effect", fear of public exposure and embarrassment, would disturb or distort the decisions made by players within the simulation.Another major concern that led to the confidentiality of this game involved the need to prevent a media leakage that could potentially disturb Soviet Union leaders or even leaders from allied countries.