“The Challenge has captured the imagination of people around the world, is rich with scientific intrigue, and, we hope, is part of a growing 'renaissance of wonder' throughout the nation," said DARPA director, Dr. Regina E. Dugan. “DARPA salutes the MIT team for successfully completing this complex task less than 9 hours after balloon launch.”
PDF with (scant) details at https://networkchallenge.darpa.mil/darpanetworkchallengewinner2009.pdf. Hit the subject link for a map with the locations. How many did your team find?