Aaron Fotheringham was born with spina bifida, a birth defect that affects the neural tubes and development of the spinal cord. The condition has forced the 16-year-old to use a wheelchair since he was 8, but it hasn't stopped him from living out his dreams. Seven years ago, Aaron tried using his wheelchair in a skatepark and it led him to invent the sport of "hardcore sitting," a term used to define the unbelievable tricks he performs in his wheelchair. Now Aaron is considered a pioneer in the skating world for doing tricks like this one - what is believed to be the first-ever wheelchair backflip.