New video shows helicopter was at 350ft...
Reports coming out saying the same ATC was switching between the airplane and helicopter...

I blame Reagan International not being shut down after 9/11 to cut down on flying threats coming/going to an airport so close to DC. Only flights above DC should be military/gov flights. Keep the threat level lower to Capital without private aircraft in the close vacinity.

Dulles and Baltimore are close enough for tourism and business.