Sailplane / glider, inverted flight, wingwalking...

[calmloki]

Hold on, where do you think you're going? Skydiver grabs glider's tail fin as they fly 2,100 metres up at 100mph | Mail Online

The still shots are pretty good, the video ditto, too bad about the camera helicopter rotor...

 

[freebird5825]

 

[TromboneAl]

Now do it without the parachute.