Ключевые слова: 4 engines, air, aircraft, airliner, airplane, altitude, atmosphere, aviation, background, blue, blue sky, business, cargo, closeup, commercial, contrail, contrails, cruising, destination, flight, fly, flying, four engine, high, high altitude, holiday, in flight, industry, jet, jet aircraft, jet airliner, jet plane, journey, modern, pattern, plane, sky, smoke, speed, telephoto, tourism, trail, transportation, travel, trip, vacation, vapor trail, vapor trails,