Ключевые слова: adventure, aerospace industry, air, air vehicle, aircraft, aircraft wing, airliner, airplane, airport, airport runway, arrival, aviation, background, backgrounds, barb, barbed, barbed wire, barbwire, barrier, border, borderline, boundaries, boundary, cage, commercial airplane, concepts, engine, fence, flight, flying, forbidden, freedom, journey, landing, landing touching down, metal, mode of transport, no people, passenger, pilot, plane, prison, prisoner, runway, security, sign, sky, tourism, transport, transportation, travel, travel destinations, trip, vacation, wind, wire,