SAN ANTONIO – The United States Postal Service and its 100-year-old ‘Operation Santa’ program is the subject of a new documentary-style movie set to come out on Dec. 4. The new movie sheds light on a tradition like no other: the fulfillment of wishes from children writing to Santa. According to USPS, hundreds of thousands of letters are sent to Santa from children and families across the country every year. The agency’s Operation Santa makes it possible for individuals and organizations to adopt these letters and send responses and thoughtful gifts in Santa’s place. The movie debuts Dec. 4, the same day that letter adoption opens in the program.