Ключевые слова: air, airline, airplane, airport, airspace boundaries, aviation, background, ban, civil, close, concept, control, danger, delayed, flight, flights, fly, graphic, holiday, icon, illness, illustration, infections, limiting flights, lockdown, no, noflight, on the forbidding sign, outbreak, pandemic, passenger, plane, prohibit, prohibited, quarantine, red, sign, sign the ban, silhouette, stop, symbol, technology, the plane, transport, transportation, travel, warning, weapon, white, zone,