When I first set out to capture planes landing at National airport I envisioned they'd be coming in from all directions. However, because of restricted airspace and noise restrictions no planes land coming in from the east - they have to circle around and approach from the west following the path of the Potomac River.
For this image I took two different landings and blended them in Photoshop. Of course the right landing was flipped from the left and the doubling was masked out. Each exposure was about 90 seconds. Further tweaking done in Lightroom.