LAYTON -- They are all different. Sitting in a bare-walled conference room in the bowels of the Layton Police Department, Utah Internet Crimes Against Children officer Riley Richins acknowledges that truth. There are the collectors. They are the ones who download and store thousands of child porn files on their computers. There are the apprehensive. Perhaps due to a guilt tugging at their conscience or some other lingering hesitancy, they download and delete, download and delete. Sometimes months pass between offenses.