I have an un-marked unit that I drive. There are 1 week out of the month that I am the Detective on call. My on call week runs from Friday to Friday, during that week I am required to drive my assigned unit everywhere I go. That includes to church or any other place I may go. Sometimes my wife rides with me, I am not agreeing with the officers driving there marked units for any reason off duty, my situation is different, or are they assigned to a SRT Unit and maybe the shoots fall on their on call times ? Don't know, maybe ask them in a non threatening way ? I mean in a way that doesn't have you coming off like a smart a@$. If they are just driving the units because they can, I, as a LEO, don't want anymore negativity than we already face.