Toys R Us on Wednesday informed employees of its plan to close all of its U.S. stores in the coming months. The chain’s liquidation will result in the shuttering of 740 retail locations and eliminate about 30,000 jobs. The 70-year-old company filed for Chapter 11 bankruptcy protection last year to ward off creditors who were owed about $5 billion. The announcement appears to have hurt the company’s holiday sales, which proved dismal as customers turned to other retailers with steadier reputations. Toys R Us employees in the U.S.

Walmart announced Wednesday it would no longer sell firearms or ammunition to anyone younger than 21 years old. “In light of recent events, we’ve taken an opportunity to review our policy on firearm sales,” the retailer announced in a statement.

Dick’s Sporting Goods, the largest sporting goods retailer in the United States, announced Wednesday it would no longer sell assault-style weapons in response to the recent deadly school shooting in South Florida. The company also announced it would raise the minimum age for all gun sales to 21 and would not sell high-capacity ammunition magazines.

Amazon is teaming up with Berkshire Hathaway and JPMorgan Chase to form a new company that could disrupt the U.S. healthcare industry in the same way the online retailer has changed the way consumers buy just about everything. The new venture, as yet unnamed, will help employees of all three companies find reasonably priced healthcare services. “The ballooning costs of [healthcare] act as a hungry tapeworm on the American economy,” Berkshire founder Warren Buffett said in a prepared statement. “Our group does not come to this problem with answers.

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.