Using radio traffic, flight data and leaked footage of an air traffic control radar screen, The New York Times examined what was happening in the moments before the midair collision near Reagan National Airport that killed 67 people. Here's what we found. Read more about the crash, including the victims and a timeline of what happened, at the link in our bio. Video by Robin Stein, Riley Mellen, Dmitriy Khavin, Alexander Cardia and Emily Steel/The New York Times #dcplanecrash #washington