With base jumping, you really need to separate out general base jumping from proximity flying. For anyone unfamiliar with the sport, base jumping implies jumpi

With base jumping, you really need to separate out general base jumping from proximity flying. For anyone unfamiliar with the sport, base jumping implies jumping off of something and then deploying a chute. This may or may not involve a wingsuit. Proximity flying involves jumping off of something in a wingsuit, and then flying closely along a mountain or other terrain for a while before deploying a chute. Proximity flying has an insanely high fatality rate, because people tend to push their limits and at some point there is just no room for a mistake.