When the traditional methods of coping with trauma don’t work, what options do you have left? Brandon Kuehn, an Iraq War veteran, believes the best way to face a range of trauma is to reach for literal physical summits — and he isn’t alone. Outdoor therapy is a growing field that is helping people like Brandon who struggle with post-traumatic stress disorder. Constant Thought is an intimate portrayal of Brandon and his attempt to walk the 2,650 miles of the Pacific Crest Trail. The film also underscores how stress of any kind can be soothed by both using and preserving the lands Brandon fought to protect.