they see the hook moving around and stuff. reporter: private first class corey doan lost his leg to an ied in afghanistan in july 2011. he says training these dogs has been a life line. it s going to be depressing to be sitting in a hospital bed recuperating. for sure. kind of takes like the man out of you, but it was nice to actually go out and do something again. instead of just sitting in the bed healing or doing physical therapy. reporter: bradley says the service dogs can help combat post-traumatic stress disorder. every time i put on the prosthetic that looks like my other arm, it s like an instant memory of me actually losing my arm that day. reporter: but irvine helps? oh, yeah. it s a great day when i m with him. good boy. reporter: jake tapper, abc news, at the pentagon. love that story. so often they just need something to channel their energies and their efforts and passions into. glad to see that program is working out for them.
they see the hook moving around and stuff. reporter: private first class corey doan lost his leg to an ied in afghanistan in july 2011. he says training these dogs has been a life line. it s going to be depressing to be sitting in a hospital bed recuperating. for sure. kind of takes like the man out of you, but it was nice to actually go out and do something again. instead of just sitting in the bed healing or doing physical therapy. reporter: bradley says the service dogs can help combat post-traumatic stress disorder. every time i put on the prosthetic that looks like my other arm, it s like an instant memory of me actually losing my arm that day. reporter: but irvine helps? oh, yeah. it s a great day when i m with him. good boy. reporter: jake tapper, abc news, at the pentagon. love that story. so often they just need something to channel their energies and their efforts and passions into. glad to see that program is working out for them.