On June 2, 2015, the Union received the Postal Service's determination of craft jurisdiction for employees operating the Small Parcel Sorter System (SPSS), which is currently deployed in five pilot test locations, and will be deployed shortly in twenty-six other facilities around the country. As set forth in the captioned letter, the Postal Service has determined that "the primary craft for all duties associated with the operation of the SPSS is the Mail Handler Craft."