WASHINGTON, DC - MAY 19: (L-R) Dr. Mark Humayun, from University of Southern California, shakes hands with President Barack Obama after receiving the National Medal of Technology And Innovation, during a ceremony in the East Room of the White House, May 19, 2016, in Washington, DC. Established in 1959, the National Medal of Science recognizes individuals who have made outstanding contributions to science and engineering. The National Medal of Technology and Innovation, created in 1980, recognizes those who have made contributions to America's competitiveness, quality of life, and helped strengthen the country's technological workforce. (Photo by Drew Angerer/Getty Images)

WASHINGTON, DC - MAY 19: (L-R) Dr. Armand Paul Alivisatos, from the University of California, Berkeley and Lawrence Berkeley National Lab, shakes hands with President Barack Obama after receiving the National Medal of Science, during a ceremony in the East Room of the White House, May 19, 2016, in Washington, DC. Established in 1959, the National Medal of Science recognizes individuals who have made outstanding contributions to science and engineering. The National Medal of Technology and Innovation, created in 1980, recognizes those who have made contributions to America's competitiveness, quality of life, and helped strengthen the country's technological workforce. (Photo by Drew Angerer/Getty Images)

WASHINGTON, DC - MAY 19: (L-R) Dr. Cato T. Laurencin, from University of Connecticut, shakes hands with President Barack Obama after receiving the National Medal of Technology And Innovation, during a ceremony in the East Room of the White House, May 19, 2016, in Washington, DC. Established in 1959, the National Medal of Science recognizes individuals who have made outstanding contributions to science and engineering. The National Medal of Technology and Innovation, created in 1980, recognizes those who have made contributions to America's competitiveness, quality of life, and helped strengthen the country's technological workforce. (Photo by Drew Angerer/Getty Images)

WASHINGTON, DC - MAY 19: (L-R) Dr. Chenming Hu, from University of California Berkeley, shakes hands with President Barack Obama after receiving the National Medal of Technology And Innovation, during a ceremony in the East Room of the White House, May 19, 2016, in Washington, DC. Established in 1959, the National Medal of Science recognizes individuals who have made outstanding contributions to science and engineering. The National Medal of Technology and Innovation, created in 1980, recognizes those who have made contributions to America's competitiveness, quality of life, and helped strengthen the country's technological workforce. (Photo by Drew Angerer/Getty Images)

WASHINGTON, DC - MAY 19: (L-R) Dr. Robert Fischell, from University of Maryland, shakes hands with President Barack Obama after receiving the National Medal of Technology and Innovation, during a ceremony in the East Room of the White House, May 19, 2016, in Washington, DC. Established in 1959, the National Medal of Science recognizes individuals who have made outstanding contributions to science and engineering. The National Medal of Technology and Innovation, created in 1980, recognizes those who have made contributions to America's competitiveness, quality of life, and helped strengthen the country's technological workforce. (Photo by Drew Angerer/Getty Images)

WASHINGTON, DC - MAY 19: (L-R) Dr. Arthur Gossard, from University of California, shakes hands with President Barack Obama after receiving the National Medal of Technology And Innovation, during a ceremony in the East Room of the White House, May 19, 2016, in Washington, DC. Established in 1959, the National Medal of Science recognizes individuals who have made outstanding contributions to science and engineering. The National Medal of Technology and Innovation, created in 1980, recognizes those who have made contributions to America's competitiveness, quality of life, and helped strengthen the country's technological workforce. (Photo by Drew Angerer/Getty Images)

SAS planes and an Icelandair plane are parked waiting to be able to take off from Arlanda airport in Stockholm, on May 19, 2016. No flights could take off from Arlanda airport due to a computer problem which led to the closure of Stockholm airspace. The problem has now been fixed according to Swedish air traffic control. / AFP PHOTO / TT News Agency / JOHAN NILSSON / Sweden OUTJOHAN NILSSON/AFP/Getty Images

This handout photograph released by the Telangana state government on May 19, 2016 shows Apple chief executive Tim Cook (L) hugging Telangana chief minister K. Chandrashekar Rao at a new Apple development centre in Hyderabad. Apple said May 19 it will open a new development office in Hyderabad, as its chief executive Tim Cook continued his India charm offensive with an investment boon to one of the country's top technology hubs. / AFP PHOTO / TELANGANA GOVERNMENT / - / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / TELANGANA GOVERNMENT"- NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS -/AFP/Getty Images