John Horlock of Atlanta finds the Delta kiosks not working as other passengers wait in the ticketing area after Delta Air Lines' computer systems crashed on Monday, grounding flights around the globe, at Hartsfield Jackson Atlanta International Airport in Atlanta, Georgia, U.S. August 8, 2016. REUTERS/Tami Chappell

Delta passengers wait to check in following a Delta Airlines system-wide computer breakdown, at Newark International Airport in Newark, New Jersey, U.S. August 8, 2016. REUTERS/Joseph Ax

A Delta Airline employee (R) gives directions to passengers arriving as they wait in the ticketing area after Delta Air Lines' computer systems crashed on Monday, grounding flights around the globe, at Hartsfield Jackson Atlanta International Airport in Atlanta, Georgia, U.S. August 8, 2016. REUTERS/Tami Chappell

A Delta Airlines employee hands out snacks to passengers waiting to check in following a Delta Airlines system-wide computer breakdown, at Newark International Airport in Newark, New Jersey, U.S. August 8, 2016. REUTERS/Joseph Ax

(FILES)A Delta Airlines jet takes off from Fort Lauderdale-Hollywood International Airport in this February 21, 2013 file photo in Ft. Lauderdale, Florida. Tens of thousands of Delta Airlines passengers around the world were stranded August 8, 2016 by a computer outage that the company said had grounded all its flights. It blamed a power failure at its hub in Atlanta. "Delta has experienced a computer outage that has affected flights scheduled for this morning," the company said in a statement. / AFP PHOTO / KAREN BLEIERKAREN BLEIER/AFP/Getty Images

(FILES) This file photo taken on January 19, 2016 shows An undated handout image released by EDF Energy in London on July 28, 2016, shows a computer generated image (CGI) of the French energy producer's proposed two nuclear reactors, Hinkely Point C (HPC), at their Hinkley Point power plant in south-west England. Britain's decision to delay final approval for the Hinkley Point nuclear power plant risks cooling relations with economic powerhouse China under new prime minister Theresa May, analysts say. / AFP PHOTO / EDF ENGERY / HOHO/AFP/Getty Images

(FILES) An undated handout image released by EDF Energy in London on July 28, 2016, shows a computer generated image (CGI) of the French energy producer's proposed two nuclear reactors, Hinkely Point C (HPC), at their Hinkley Point power plant in south-west England. Britain's decision to delay final approval for the Hinkley Point nuclear power plant risks cooling relations with economic powerhouse China under new prime minister Theresa May, analysts say. / AFP PHOTO / EDF ENGERY / HayesDavidsonHAYESDAVIDSON/AFP/Getty Images

Egyptian mourners carry the coffin of Nobel prize-winning Egyptian-American chemist Ahmed Zewail during the last part of his funeral procession at a cemetery on August 7, 2016 in Cairo's Sixth of October suburb. Zewail, who served as a science and technology advisor to US President Barack Obama, died on August 2, 2016 in the United States at the age of 70. / AFP PHOTO / MOHAMED METEABMOHAMED METEAB/AFP/Getty Images