Ключевые слова: aircraft, airplane, airport, alert, animal, blur, canine, canine unit, dog, duty, evening, focus, german shepherd, guard, handler, intelligent, k9 unit, law enforcement, loyal, military, obedient, officer, patrol, police, protection, protective dog, runway, safety, security, service dog, sky, sunset, tactical, trained, transportation, travel, tsa, vest, watch, working dog,