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

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