coronavirus pandemic quarantine, flights canceled, behind a barbed wire fence visible aircraft, Riga, aircraft, airplane, airport, aviation, barbed, barbwire, barrier, border, cancelled, closed, corona, coronavirus, covid-19, danger, departure, epidemic, europe, fence, flight, fly, global, grid, ground, infection, infrastructure, iron, isolated, jet, latvia, metal, outbreak, pandemic, parked, passenger, protect, protection, quarantine, rix, safety, sky, spike, spiral, steel, terminal, tourism, transport