We still haven’t heard from the FAA yet as to why Ronald Reagan Washington National Airport’s tower didn’t answer aircraft and controllers who called it two nights ago. Until we find out, here’s a tape of conversation between a controller and an aircraft arriving in the Washington, D.C., area about the silent tower. (UPDATE: Investigators have learned the single controller in the tower cab that night was asleep.) Two airliners landed using uncontrolled field procedures. This third one narrowly escaped having to do the same. You have to wait through a commercial, first, before the tape begins.