In today's health matters, it's one of the worst imaginable ways to end a vacation or a business trip; being rushed to the hospital. But what happens when you're hours away from help?

That's when pilots aboard flying ambulances go to work. The pilots of flying doctors take off day or night and land on any kind of surface across the continent of Africa.

Flying doctors is the commercial wing of AMREF, a storied African medical charity.

It was started in the 1950s in Kenya by three surgeons. Every time the call comes in, a machine honed by decades of experience swings into action. Pilots, doctors, nurses and caravans are saving lives.