International air traffic is down 92 percent this year, with many travelers worried about getting COVID-19. There are also government travel bans and quarantine rules that make planning difficult. What will it take to get people flying again? Airline officials believe that quick virus tests of all passengers before takeoff could be the answer. Experiments on improving safety are taking place around the world. A United Nations organization is leading talks to set new rules. And all of this is important. As the pandemic worsens, the near total end of international travel is holding back economies as they try to return to business activity. Millions of jobs are at risk, including those at airlines, airports and businesses like hotels and restaurants.