ELLSWORTH – Maine State Police Cpl. Micah Perkins has been promoted to sergeant in Major Crimes Unit North. The unit covers Hancock, Washington, Aroostook, Piscataquis and Penobscot counties. Cpl. Perkins is a 22-year veteran of the force. He specializes in investigations, crime scenes and forensic photography. Perkins was a charter member of the Evidence Response Team (ERT) at its inception in 2001 and is currently an assistant commander of that team. He developed and coordinates the crime scene processing course at the Maine Criminal Justice Academy as well as a three-day photography course. He has also been a firearms instructor for over 15 years.