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WASHINGTON, DC - JANUARY 15: Federal Aviation Administration Administrator Michael Huerta (L) and Professor Mary Cummings of the Humans and Automation Laboratory at the Massachusetts Institute of Technology testify before the Senate Commerce, Science and Transportation Committee during a hearing about the future of unmanned aviation in the Russell Senate Office Building on Capitol Hill January 15, 2014 in Washington, DC. The committee heard testimony about the Federal Aviation Administration's policy on unmanned aviation systems and about the privacy and freedom issues surrounding their use. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON, DC - JANUARY 15:  Federal Aviation Administration Administrator Michael Huerta (L) and Professor Mary Cummings of the Humans and Automation Laboratory at the Massachusetts Institute of Technology testify before the Senate Commerce, Science and Transportation Committee during a hearing about the future of unmanned aviation in the Russell Senate Office Building on Capitol Hill January 15, 2014 in Washington, DC. The committee heard testimony about the Federal Aviation Administration's policy on unmanned aviation systems and about the privacy and freedom issues surrounding their use.  (Photo by Chip Somodevilla/Getty Images)