Don't worry, no one got sick on my flight. I just found this blog entry from a Calgary doctor who was called on to treat a patient during an airline flight. It raises some interesting issues.
I think anyone would put step forward and offer his or her skills in a life or death situation. If a person is trapped under something heavy, people with the capability to lift heavy things, be they weightlifters or crane operators, will do their best to get the object off. People want their skills to be useful. If there's a way to save lives by swimming, knowing regular expressions, or using the Heimlich manoeuvre, people are glad to have had the opportunity to do it. It's true that the skills of trained accountants are rarely called upon to answer to emergencies in public places, so doctors may bе disproportionately called upon to interrupt their leisure to do unpaid work. I think Dr. Fernandes has the right attitude about it.