If you're stuck out of town and must get back to work, be careful how you handle that.
On an unrelated note: Volcanic ash is extremely damaging to the respiratory system. It can cause severe upper respiratory infections, sinus infections, etc. One of the FIRST things the Dr tells a patient is NOT to travel. Doctors in other continents (Australia, Asia, EUROPE) consult foreigners paying cash very quickly, and it is cheaper than you'd think.