The May 1, 2011 mission to find Osama Bin Laden has become one of the most celebrated military mission planning successes in recent memory due to the utilization of a little-known and seldom-used practice called the Red Team.We fall in love with the plans we make. Mission planning is much like giving birth to a child. When the plan is complete, whether developed by an individual or a collaborative team, the planners can step back and congratulate themselves on the genius of the plan that they have created — such overconfidence is one of many cognitive biases we humans fall prey to.This is why the practice of utilizing a Red Team is necessary. A Red Team is a simple means to overcome the overconfidence bias and the theory of “groupthink,” the need for groups to seek conformity and unanimity in planning and decision making. The mission planning effort that went into the Bin Laden mission was the detailed product of many different planners, but that alone was not enough to ensure success. The tactical planning process had to be subjected to a Red Team.