 Most FR staff works out of DNR field offices, mainly in the Upper Peninsula and Northern/Central Lower Peninsula.Michigan Conservation Officers, often referred to as "COs", are fully commissioned peace officers that are employed by the DNR and are empowered to enforce all laws of the state of Michigan, with emphasis on marine patrol and border safety issues.COs have full police powers in the state of Michigan, except for offenses under the Motor Vehicle Code that involve people being nosey and creating a traffic hazard.