For most people, fear is a natural reaction to a situation where death or dismemberment has a strong possibility. We, as humans, often find ourselves scared when facing danger. Some people, however, seem to be missing this natural reflex and face situations that can be fatal, or incredibly painful, with little sense of fear. 

Below is a huge collection of images, 50 to be precise, of various people showing no signs of fear. Most are work related images, but some are just every day people doing every day things. I can't see myself doing any of these things.