Trash Picker book 1: danger on a tropical beach

After two decades of special-ops service, primarily in the high, cold mountains of Afghanistan, Sergeant Delton L. Remson, "Remmy" to his friends, a skier and snowboarder originally from Idaho, pursues his simpler life on a tropical beach. He is worn out from war. His idyllic oceanside village and secluded campsite become more dangerous each tourist season. Nefarious traffic on nearby sea lanes makes Remmy emerge as beach guardian. He monitors sugar-sand shores as he picks up aluminum cans for extra cash, becoming special protector of Bud and Daphne, his elderly immigrant friends. Dear Claire, so far away, is always in his thoughts. Then he meets mysterious Sanghee, thwarting a brutal attack and falling into a world of peril.