Retail sales in the United States jumped 4.9 percent this year during the Christmas season, the largest increase since 2011, according to the latest Mastercard SpendingPulse report. A strong economy and growing consumer confidence helped to fuel retail spending, said analysts, noting retailers benefited from Christmas falling on a Monday this year, giving shoppers a full weekend for last-minute gift buying.

Atlanta-based Chick-fil-A answered the call from the city’s mayor and came to the rescue Sunday night to help feed thousands of stranded travelers at powerless Hartsfield-Jackson Atlanta International Airport. “The mayor called about 10 p.m. and asked for assistance,” Chick-fil-A said in a statement.

Thousands of people remain stranded after Hartsfield-Jackson Atlanta International Airport lost power Sunday, grounding more than 1,000 flights. Electricity went out around 1 p.m. due to a fire at an underground power facility, according to Georgia Power. Electrical service was restored and lines were long but moving Monday morning as passengers boarded planes, attempted to reschedule flights, and picked up baggage. Delta Air Lines, with its largest hub in Atlanta, offered passengers a free one-time change to their flights.

Managers closed a mall south of Birmingham, Ala., early Thanksgiving night after several fights broke out among shoppers hunting for Black Friday deals. Police in the town of Hoover denied reports of gunfire outside the mall, saying firecrackers likely caused the popping sounds.

Uber acknowledged on Tuesday it covered up a year-old hacking attack that compromised the personal information of more than 57 million riders and drivers. So far there is no evidence that the data was misused, according to ride-hailing service’s CEO, Dara Khosrowshahi, in a posting on Uber’s website. The hackers took the names, email addresses, and mobile phone numbers of riders and drivers from around the world, and the driver’s license numbers of at least 600,000 U.S. drivers.

President Donald Trump is expected to name Federal Reserve board member Jerome Powell to succeed Chairwoman Janet Yellen when her term expires in 2018. Powell, 64, has supported Yellen’s cautious approach to raising interest rates. He spent years working at investment firms, but unlike the past three Fed leaders doesn’t have a doctorate degree in economics. Investment strategist Mona Mahajan of Allianz Global Investors said Powell, like Trump, might be more inclined than Yellen to relax some of the stricter regulations that were imposed on banks after the 2008 financial crisis.

Richard Thaler of the University of Chicago won the Nobel Prize in economics Monday for research showing people’s financial choices often don’t follow rational economic theory. His work brought greater understanding of the psychology of economics, Swedish Academy of Sciences Secretary-General Goran Hansson said.