"It's horrible to think that a small cadre of people would manipulate that information. I mean, for God's sake, we've admitted that we were experimenting on our veterans with mustard gas. So there is no security question. It can't possibly be the reason"

This quote by Dwight Schultz is referring to the dishonest experiments performed on veterans by the United States government. He is expressing his shock and disbelief that a small group of individuals would control information about these experiments, as if it were something to be hidden or concealed. He is stating that there is no reason for this, as the US government has already admitted to conducting these experiments. He is stressing that there is no security concern that can be used to validate the manipulation of this info, as it is currently understood and accepted that these experiments happened. He is revealing his outrage that anybody would try to conceal or reject the fact of what took place.