Cooperating defendants have proven to be necessary and valuable tools in preventing crime and prosecuting criminals. Federal prosecutors must exercise vigilance to thoughtfully decide how best to pursue the information cooperating defendants can provide. Such informed and good-faith judgment calls will inevitably require every prosecutor to weigh "the relative value or importance of different rights and interests and decide what, if any, action to take in response to a given tip. The DOJ and the ninety-three U.S. Attorneys can foster good decision-making by developing a culture of "doing justice" in which every prosecutor is encouraged.