Historically, military units could spend months marching home from war. During this journey, they would process and come to terms with their wartime experiences. But in today’s age of modern transportation military personnel can find themselves home within a few days of serving in a combat zone.

In 1948, Earl Shaffer told a friend he was going to “walk off the war” to work out the sights, sounds, and losses of World War II. Four months later, Shaffer became the first person to hike the entire length of the Appalachian Trail from Georgia to Maine.

Since 2001, over 3 million veterans have returned home from war but many of them have never transitioned from their experiences. The Department of Veteran Affairs estimates that up to 20% of post 9/11 veterans suffer from Post-Traumatic Stress Disorder.