A Queens New York firefighter was hit with kiddie porn charges after police traced a computer router to his firehouse, police sources said Monday. Michael Chojnacki, 53, was charged with promoting the sexual performance of a child younger than 17, police said. He was busted at his Long Island home, where he allowed police to seize and search his electronic devices, sources said. Child porn files were uploaded on social media, sources said, and he accessed at least some of the files at Engine 266 in Rockaway Beach. Chojnacki was awaiting arraignment late Thursday.