Ключевые слова: 747, activity, aerial, air, aircraft, airlines, airplane, airshow, america, annual, aviation, bay, blue, boeing, ca, california, city, coast, demonstration, event, fleet, flight, flying, guard, helicopter, military, october, outdoor, people, performance, popular, rescue, san francisco, show, sky, technology, tourism, tradition, transportation, travel, united, usa, vacation, week,