People remember whether you made difficulty feel manageable or contagious.

Difficulty spreads or settles depending largely on how the person in charge holds it. Visible panic multiplies through a group faster than any information does, while steadiness gives everyone a reference point to organize around. People remember the emotional weather far longer than the specifics of the crisis.

In the next hard moment, manage your own reaction before addressing the room. Not by pretending things are fine, but by being accurate and calm about them. That composure is the most useful thing you can supply.