By the time Davy Lloyd told his father he was tired, he had already been beaten badly enough that David Lloyd thought his son might pass out. Davy was still alive. So were his wife, Natalie, and Jude Montis, the longtime Missions in Haiti leader who had become part of the Lloyd family after 20 years of working beside them. Armed gang members had taken them after a youth service outside Port-au-Prince, and David was on the phone from Oklahoma, tr…