After working at a crowded and dangerous internment camp in Iraq, Air Force Staff Sgt. Heather O’Brien brought home with her anxiety and post-traumatic stress disorder.

Roughly 7% of all US service veterans have PTSD, with symptoms such as severe anxiety, sleep disturbances and agoraphobia.

K9 dogs are applauded for being the brave front liners that accompany their partners in risky missions. But of course, this job comes with a cause, as it could affect the dog and even the military personnel/police mentally.