How do you behave in a crisis?

Look at the way you do that outside the crisis. Copy it. Be kind and determined. Prepare and expect the unexpected. Make sure that there are no external signs of tension, insecurity or doubt. Sweat, trembling hands, unkempt clothing. Take a good look at the place and environment where you communicate. Make sure that's what you want to say. Also try to avoid disturbing noise and other distractions.