Ключевые слова: adventure, air route, air travel, aircraft, airliner, airplane, airspace, altitude, aviation, beauty, blue, clouds, commercial, communication, contrails, day, destinations, distance, efficiency, environment, excitement, experience, exploration, flight, freedom, high altitude, horizon, infrastructure, journey, landscape, leisure, meteorology, modern, movement, nature, outdoor, safety, scenic, sky, speed, sunny, technology, tourism, transportation, travel, travel industry, trip, visibility, weather,