Dr. Ann Marsh-Senic pulls into the parking lot at the Renaissance Fencing Club in Troy, Michigan, in early April.
Marsh-Senic, a former Olympic fencer, keeps her mask and stethoscope in a bag, sealed up and locked in the truck. She wears the mask while intubating patients — the riskiest procedure that she has performed during the COVID-19 crisis — where she has to guide a tube down a patient’s throat before hooking it to a ventilator. She did it as many as three times a day during the past few weeks as the coronavirus pandemic swept across metro Detroit.