In a time of crisis the three most important things a leader can do are: put people first, keep a clear head, and take care of yourself.
Put People First
Everything can wait except you being there for those that work for or with you. In times of crisis, we look to our leaders. Now it's the time for you to lead from the heart and show you care. Everyone's safety and well being needs to be your number one priority. Communicate clearly and often. People need to hear from you even if you don't have all the answers. You will need to make tough decisions but if you make them with empathy and concern for the well being of everyone, people will understand better and follow your lead.
Keep A Clear Head
It's easy to let our imagination get the best of us and to think of all that can go wrong. Stay in the present and don't ruminate about the past or amplify fears about the future. You don't have all the answers nor can you control much of what's going on. A clear head is your most important weapon when everyone around you is stressed and on the verge of collapse. When you start to feel overwhelmed, and it will happen often, take a deep breath, and remind yourself that you can get through this.
Take Care of Yourself
If you don't stay healthy, physically and mentally, you will not be of service to others. Make a little time to take care of your needs and those of your family. Breathe and take frequent breaks. Don't be afraid to ask for help. You can't do it alone. You will be amazed at how willing people are to step up and help.