In this Thursday, Feb. 7, 2013, file photo, packages wait to be sorted in a Post Office as U.S. Postal Service letter carrier Michael McDonald, gathers mail to load into his truck before making his delivery run, in Atlanta. The financially struggling U.S. Postal Service said Wednesday, Aug. 14, 2013 it is revamping its priority mail program as part of its efforts to raise revenue and drive new growth in its package delivery business. (AP Photo/David Goldman, File)
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