Mystery Crop Damage Answered?

Remember this story?

 

http://www.wreg.com/news/wreg-mystery-crop-damage,0,187535.story

 

Well, I apologize for not keeping up with this but here's the answer they came up with:

 

http://www.clipsyndicate.com/video/play/1544008/fedex_plane_possibly_behind_mystery_crop_damage?wpid=7914