10.21.12 - Prize of up to $1.5 million considered for successful demonstrations.
10.18.12 - NASA seeks unmanned aircraft to maneuver in busy airspace.
10.18.12 - NASA considers a $1.5m bounty for autonomous drones capable of safely navigating the crowded skies above the U.S.
10.17.12 - NASA gauges industry interest in a Centennial Challenges to build the next cool unmanned aircraft.