When the whole plan falls apart, the steady one in the group becomes the plan.

In a crisis everyone looks around for whoever is not panicking. That person becomes the organising point, not because they know more but because their steadiness gives everyone else something to work from. Calm spreads the same way panic does. Being that person has less to do with competence than with not adding to the noise.

Lower your voice when something goes wrong in a group, and name the next single step. Pick one small thing that can be done right now. The rest of the plan can be rebuilt once people stop spinning.