In this Thursday, Oct. 13, 2016, photo, a Delta Air Lines jet sits at a gate at Hartsfield-Jackson Atlanta International Airport in Atlanta. Delta announced Thursday, Dec. 8, 2016, that the airline is rolling out new free snacks for customers in the main cabin, including brand-name yogurt bars and pretzels. Some will come in larger portions than before because, Delta has figured out, that's what customers crave. (AP Photo/David Goldman)
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