A Fort Fairfield man is going to prison for 5 years for possession of child pornography. Jacob Rogeski, 25, was sentenced Friday in U.S. District Court in Bangor. After he serves his prison time, he will be on supervised release for 10 years. According to court documents, in September 2011 investigators learned an internet user, with an IP address assigned to Rogeski, was downloading child porn. Investigators say they found more than 100 video files and more than 400 image files of child porn on Rogeski’s computer. Rogeski pleaded guilty in August of 2012.