Increasing autonomy will increase uncertainties as to how weaponry will perform in new situations. Personnel find it extremely difficult to coordinate their actions with “intelligent” systems whose behavior they cannot absolutely predict. David Woods and Erik Hollnagel’s book Joint Cognitive Systems: Patterns in Cognitive Systems Engineering illustrates this problem with the example of a 1999 accident in which a Global Hawk UAV went off the runway, causing a collapsed nose and $5.3 million in damage. The accident occurred because the operators misunderstood what the system was trying to do. Unfortunately, placing blame on the operators and increasing the autonomy of the system may actually exacerbate coordinating the activities of human and robotic agents.