Derek Harrington, retired Marine Force Recon and SERE instructor, is barely scraping by teaching the basics of wilderness survival. His fledgling bushcraft school is on the cusp of going out of business and expenses are piling up fast. His only true mission these days? To get his ailing father into a full care facility and to support his ex-wife and their son. When one of his students presents him with an opportunity too good to be true--$20,000 to...