Stacks of United States Postal Service flat tubs sit on a conveyor belt at the USPS Suburban processing and distribution center in Gaithersburg...
{"Image ImageDescription": "Stacks of United States Postal Service (USPS) flat tubs sit on a conveyor belt at the USPS Suburban processing and distribution center in Gaithersburg, Maryland, U.S., on Tuesday, Dec. 19, 2017. The USPS anticipates delivering more than 15 billion total pieces of mail this holiday season with December 18-24 expected to be the busiest mailing and delivery week. Photographer: Andrew Harrer/Bloomberg via Getty Images", "Image Copyright": "? 2017 Bloomberg Finance LP"}