Drones are displayed at an event with the Small Unmanned Aerial Vehicles (UAV) Coalition, last month. The FAA's proposed new rules for their commercial use require certified pilots to fly them and limit their speed, altitude and area of operation. Jacquelyn Martin/AP hide caption

itoggle caption Jacquelyn Martin/AP

Travelers lined up Friday to reschedule flights at Chicago's O'Hare International Airport after the region's air traffic control was sabotaged. More flights are resuming Saturday, but hundreds were also canceled. Scott Olson/Getty Images hide caption

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The Air Force's U-2 spy plane first took flight in August 1955. One of the planes confused air traffic control computers in California last week, creating havoc. USAF/Getty Images hide caption

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A water-collecting drone hovers at a testing site in Lincoln, Neb., in 2013. The Federal Aviation Administration is working on rules for the commercial use of unmanned aircraft. Nati Harnik/AP hide caption

itoggle caption Nati Harnik/AP

Pablo Lema shows off his quadcopter. Steve Henn/NPR hide caption

itoggle caption Steve Henn/NPR

Sen. Susan Collins, a Maine Republican, and fellow GOP senators accused the Obama administration of creating a "manufactured crisis" by furloughing FAA air traffic controllers and causing delayed flights. J. Scott Applewhite/AP hide caption

itoggle caption J. Scott Applewhite/AP

Joe Kummer, president of Propulsive Wing in Elbridge, N.Y., is rooting for having a drone test site in upstate New York. He says it could save him trips to the West Coast to try out new drone prototypes. Ryan Delaney/WRVO hide caption

itoggle caption Ryan Delaney/WRVO