 Mast and his family were the recipients of a custom ADA-compliant home awarded to them by the non-profit organization Helping a Hero.After being honorably discharged from the U.S. Army, Mast was hired as an explosives specialist for the United States Department of Homeland Security.While recovering from his injuries at Walter Reed Army Medical Center, Mast provided explosive and counter-terrorism expertise to the Office of Emergency Operations at the National Nuclear Security Administration from July 2011 to February 2012 and as an instructor of Home Made Explosives for the Bureau of Alcohol, Tobacco, Firearms and Explosives.