double exposure of north korean flag and american flag, american soldier crossing border north korea

alertness american american flag soldier army background border line borderline bruce byron lowrance bryce dubee charles jenkins cia commando concept conflict conflict zone country danger demilitarized detain espionage fence fight fort bliss hazard joseph yun journey korea north korean border war lost military south korea otto warmbier panic panmunjom runaway sightseeing subversion surrender symbol defect travis king u n command u s citizens war