This Boeing 767-323 (ER) of American Airlines just touched down after a long haul flight from Chicago O'Hare. In front of the runway, three of four PAPIs can be seen. The Precision Approach Path Indicators gives the pilot a visual indication of how the aircraft is located on the approach profile. In the background, the ground-based navaid Stockholm Arlanda VOR (VHF omni directional radio range) can be seen. On the wings of the Boeing 767, you can see the deployed spoilers. Spoilers are devices designed specifically to reduce lift (spoilers also increase drag). They extend from the surface of the wing into the air stream. These devices are helpful during landing and rejected takeoff. In this application they reduce lift, putting more weight onto the wheels - greater weight on the wheels improves braking.