FILE PHOTO: Defense Advanced Research Projects Agency (DARPA) Director Arati Prabhakar takes part in an onstage interview at the Washington Ideas Forum in Washington, September 30, 2015. REUTERS/Jonathan Ernst
FILE PHOTO: Defense Advanced Research Projects Agency (DARPA) Director Arati Prabhakar takes part in an onstage interview at the Washington Ideas Forum in Washington, September 30, 2015. REUTERS/Jonathan Ernst