BERKELEY, CA - JULY 18: Members of the UC Berkeley community gather for a vigil in honor of Nicolas Leslie, a student killed in last week's truck attack in Nice, France, on July 18, 2016 at Sproul Plaza in Berkeley, California. Leslie, an environmental sciences major, was part of the university's study-abroad program in Nice during the attack. (Photo by Stephen Lam/Getty Images)

BERKELEY, CA - JULY 18: A man carries a bundle of flowers during a vigil in honor of Nicolas Leslie, a UC Berkeley student killed in last week's truck attack in Nice, France, on July 18, 2016 at Sproul Plaza in Berkeley, California. Leslie, an environmental sciences major, was part of the university's study-abroad program in Nice during the attack. (Photo by Stephen Lam/Getty Images)

BERKELEY, CA - JULY 18: People comfort each other during a vigil in honor of Nicolas Leslie, a UC Berkeley student killed in last week's truck attack in Nice, France, on July 18, 2016 at Sproul Plaza in Berkeley, California. Leslie, an environmental sciences major, was part of the university's study-abroad program in Nice during the attack. (Photo by Stephen Lam/Getty Images)

BERKELEY, CA - JULY 18: A man lights a candle next to a photo of Nicolas Leslie, a student killed in last week's truck attack in Nice, France, during a vigil on July 18, 2016 at Sproul Plaza in Berkeley, California. Leslie, an environmental sciences major, was part of the university's study-abroad program in Nice during the attack. (Photo by Stephen Lam/Getty Images)

(FILES) This file photo taken on August 5, 2015 shows a billboard for the technology company Yahoo is seen in Washington, DC. Yahoo said July 18, 2016 its loss in the second quarter widened to $440 million from $22 million a year earlier, while offering no definitive news on efforts to sell its core Internet business. / AFP PHOTO / KAREN BLEIERKAREN BLEIER/AFP/Getty Images

CLEVELAND, OH - JULY 18: Stephen K. Bannon checks his computer while hosting Brietbart News Daily on SiriusXM with guest Sonnie Johnson at Quicken Loans Arena on July 18, 2016 in Cleveland, Ohio. (Photo by Kirk Irwin/Getty Images for SiriusXM)

BERN, SWITZERLAND - JULY 18: Detail shot of race leader Chris Froome of Great Britain and Team Sky adjusting his cycling computer at the starting line ahead of the 209 kms stage 16 of Le Tour de France from Moirans-En-Montagne to Berne on July 18, 2016 in Berne, Germany. (Photo by Michael Steele/Getty Images)

(FILES) A file combination of two file pictures made on September 30, 2015 shows the logo of French retailer FNAC (top) in Courbevoie La Defense district on February 26, 2014, and the logo of a Darty store (bottom) in Paris on July 2, 2013. The French competition authority announced on July 18, 2016 it authorized the retailer of cultural and technological products Fnac to buy Darty, under specific conditions relative to competition. / AFP PHOTO / PHOTO DESKPHOTO DESK/AFP/Getty Images