The cemetery was never a fit for me, if indeed the flight path IS relevant. The arcs just never married up so I did this graphic to show that.
I have also made a png that you can place over other images you might think are a possible match and a jpg with just the path.
I don't know if it is me (it usually is) but the flight pattern just doesn't match up properly. I can't reconcile the ends of the larger two arcs (one with 2, one with 3) and the exit. Maybe other anons can work it out.
Another thing about the flight path is, if it IS relevant is why do the 180 turns on the middle path? There is no need in order to complete the graphic which makes me think it might be that testing thing an anon mentioned, something about testing radar or something like that. (Sorry - artist here, not au fait with technical plane shit).