Orb of light flew across the sky, airforce planes circled area of spotting.Green orb appeared in the middle of sky, west of grand forks, and floated across the sky, then stopped for a few seconds and then disappeared. Moments after Airforce planes took off from grand forks airbase and circled the area where the orb disappeared for over an hour before heading back to base.((NUFORC Note: Witness elects to remain totally anonymous; provides no contact information. PD))