When Santa doesnt finish delivering gifts on Christmas Eve, Aurora letter carrier Doug Fischer steps in.For the last ten years, hes been dropping off last-minute express mail packages on Christmas day, dressed as the jolly old man.Spreading the joy, giving these packages, these presents to people It makes them happy, it makes me happy, Fischer said.A miniature sleigh and eight tiny reindeer are all well and good on Christmas Eve, but on this white Christmas, Fischer traded them in for a 4-wheel-drive Chevy pick up.He said its all worth it for reactions like that of Marissa Hoover, 4, who danced around and ran to hug Santa when she saw him at her door."That's what' this is all about. That's why I do this every Christmas. Did you see the look on that little girl's face? That's awesome," he said.The Postal Service always delivers express mail packages on Christmas in major metro areas, but few carriers deliver the Christmas spirit like Doug Fischer.