Air traffic controllers at Dulles International Airport outside Washington, D.C., are using new technology that lets them exchange digital messages with pilots. Cliff Owen/AP hide caption

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Cliff Owen/AP

Air Traffic Controllers And Pilots Can Now Communicate Electronically

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Two Spanish Iberia airplanes stand on the tarmac at the Adolfo Suarez Madrid-Barajas airport in Madrid on Monday. Spanish air traffic controllers started a four-day partial strike that could affect some 5,300 flights. J.J. Guillen/EPA /LANDOV hide caption

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J.J. Guillen/EPA /LANDOV