Title text:
Detectives say the key to tracking down the source of the kites was a large wall map covered in thumbtacks and string. 'It's the first time that method has ever actually worked,' said a spokesperson.
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3121/
As a kid I once flew a kite with almost 1,500 feet of kite string. A quarter mile or so. It sagged quite a lot but we estimated it was about 350-400ft up or so in a field. Then a crop duster showed up.
I put the string between my legs while a fiend held the spool and ran as fast as I could to bring down the kite.
We were also about 1 mile past the end of a air force runway.