Aimee Copeland Mercier was in a zip line accident in 2012. Since then, she’s done amazing things for others through her foundation. Her latest project is bringing the Action Trackchair to state and national parks. These are the “Land Rover” of wheelchairs. They allow folks to visit the wonders of these parks without limitations due to regular wheelchairs. Click the link below to read about the technology behind the design of these chairs and how they allow their users to roll along the most difficult terrain.