http://en.wikipedia.org/wiki/Eielson_Air_Force_Base#cite_note-2



"(...)
According to the controllers watching the scopes, both U.S. Air Force KC-135 air-refueling tankers had flown south out of Alaska. But the big Boeings were not refueling other aircraft. Instead, as Dickie, the kids and the controllers watched, the four-engine jets began making patterns over Edmonton - 'circuits' the controllers called it.
(...)"
http://www.holmestead.ca/chemtrails/soilradar.html