DCA TWR: PAT25, traffic just south of the Woodrow Bridge, a CRJ, it's 1200 feet setting up for runway 33.
PAT25: PAT25 has the traffic in sight, request visual separation.
DCA TWR: Visual separation approved.
Audio of MID-AIR CRASH into Potomac River: https://www.youtube.com/watch?v=CiOybe-NJHk