Yesterday, July 31, “Extreme Makeover: Home Edition” traveled to Ottawa, Kansas, to surprise the Hill family with the door knock that can change lives. Staff Sergeant Allen Hill was almost killed by a massive roadside bomb while serving in Iraq. He has recovered from the physical wounds, but is still haunted by injuries that we can’t see. Environmental triggers such as loud noises, dimly lit spaces and long hallways can bring about episodes of Post Traumatic Stress Disorder (PTSD). Some of these episodes are particularly dangerous, as they can send the Sergeant running for cover; one of his family’s greatest fears is that he will run into the street during an episode and be killed. The Sergeant has just completed years-long inpatient PTSD treatment far from home, and is ready to return. Unfortunately, environmental triggers abound in his former home: The house he once lived in is near a rock quarry, where there are constant dynamite blasts, and there’s a train yard that is a perpetual source of terrifying noises and vibrations. For Sergeant Hill to be reunited with his family, he needs a new home — one built in a suitable location.