They were over the river, not the airport. little detail that is a much larger picture. Why would well trained military pilots at night fly 200 ft higher than regulations allowed going over the Potomic river by RR airport?
Could there be a flight controller civilian or military based involved with giving the two aircraft that collided misinformation to create the crash? Great conspiracy theory for those dabbling with reasonable doubt life.
remember the flight controller in the series Breaking Bad?