Sustained human powered flight, a $95,000 Kremer prize was the
incentive to achieve the goal. The Gossamer Condor was designed by
Dr. Paul MacCready and Dr. Peter Lissamen and powered by cyclist
"It is always our responsibility to maintain the separations.
In this case, when you don't know the altitude, it is very
dangerous. I would have preferred to move them laterally, but it is
always our responsibility to keep them separated."
Source: An unidentified Brazilian air traffic
controller who works at the center responsible for directing
traffic in the area where a Gol airlines 737 and a private business
jet collided last month.