Crisis situations are inherently uncertain and threatening. Although the primal stress reactions they provoke deliver some advantages, they so severely restrict intellect and behaviour that consultants observe crisis teams making the same mistakes over and again. Stress risks can be managed before, during and after a crisis. Crisis planning can select the right people, control the crisis team environment, and mitigate fatigue risks and memory demands. Because stress reactions are primitive, stress can be manipulated at a remarkably primitive level and teams can increase their resilience through such basics as sleep and breathing skills. Teams can learn to manipulate perceptions of danger, to tolerate uncertainty and to become comfortable making decisions which were reasonable at the time. Crisis leaders can frame the crisis as a challenge and options as gains, and can ensure the team avoids groupthink and challenges the paradigm. Where individuals are trained to apply critical thinking processes, intuitive decision-making is not only fast, but also accurate, and helps to challenge assumptions, predictions and groupthink. Crises are more easily recognised and managed where training has covered critical decision methods.