FILE - This Dec. 19, 2011 file photo shows people in line at the U.S. Postal Service Airport station in Los Angeles. Emboldened by rapid growth in e-commerce shipping, the cash-strapped U.S. Postal Service is moving aggressively this holiday season to start a premium service for the Internet shopper seeking the instant gratification of a store purchase: same-day package delivery. (AP Photo/Nick Ut, File)
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