Some injuries require a lifetime of physical therapy.

Casey Conklin: Ranger Battalion

Casey Conklin joined the 3rd Ranger Battalion as a medic, because he always believed they were the toughest group around. After his experience in the Battle of Mosul in Iraq and receiving his Ranger tab, he doesn't question how tough he is. After returning home, he finds that he still must challenge himself to stay healthy and redefine toughness at home.

Directed by Adan Pulido