In 2004, Dan Lasko lost his leg below the knee in Afghanistan while serving in the United States Marine Corps. Now, thanks to a new 3D-printed prosthetic “fin”, he, and other amputees, can swim again. Swimming is a great, low-impact exercise that can keep athletes and amputees like Dan in shape. However, the most important thing about his new prosthetic is that it allows him to swim with his kids
