Ключевые слова: aerospace, aircraft, airline, airplane, alertness, aviation, banned, cancelled, clouds, concept, coronavirus, crisis, danger, disaster, economy, epidemic, flight, flu, flying, global, healthcare, illness, infectious disease, journey, lockdown, medicine, meteorology, outbreak, pandemic, panic, passenger, plane, pneummonia, protection, safety, security, sign, symbol, tourism, tourist, transport, travel, vacation, vehicle, view, window, wing,