Tech. Sgt. Jason Caswell stands in a C-130 hangar at Bagram Airfield, Afghanistan, Jan. 5, 2017. After a sports injury in 2010, Caswell underwent a year of surgeries, two years of painful limb-recovery therapy, followed by physical therapy. In October 2014, his limb still hadn’t healed and began to worsen so Caswell elected to amputate his injured leg. Air Force photo by Staff Sgt. Katherine Spessa