“If there is a doctor on board, would you please make yourself known to a member of the cabin crew?” Reflexively, my hand shoots up to press the button. Seven times I have responded to such requests. Mostly it has worked out well. Twice I thought the passenger had had too much alcohol. Once I comforted an anxious woman. Another time a young army recruit heading for basic training had unexplained arm pain. Sometimes it was more serious. A man with abdominal pain told me he had cancer and he needed my attention and reassurances. A woman had a cardiac emergency, and I had to request an unscheduled landing. Another emergency on a trans-Pacific flight required the extended care of several physicians.