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

itoggle caption Scott Olson/Getty Images

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

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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

Alice Beauheim, her father and Bill Love fly their homemade machines at the Drone Smackdown in Manassas, Va., on Sunday. Objections by the Federal Aviation Administration forced organizers to hold the tongue-in-cheek contest outside of Washington, D.C. John Procter hide caption

itoggle caption John Procter