Mark Sheppard loves to be in nature. He's often on local trails near his Wayne, #Pennsylvania, home with furry sidekicks Chase and Ruthie. But his journey to get there was anything but a walk in the park. He was diagnosed in early 2017 with a rare, incurable illness that scars over the lungs — idiopathic pulmonary fibrosis. By 2019, he was tethered to an oxygen machine and a year later, his lungs failed. Doctors intubated him after he said his goodbyes to his family. A couple of weeks later, he woke up with two new lungs, thanks to an organ donor. #LungForceWalk