U.S. Air Force Staff Sgt. Zach Braegelmann, 133rd Security Forces Squadron, keeps a 360 degree perimeter as members cross the road at the Arden Hills Army Training Site, Arden Hills, Minn., Sept., 16, 2018. Braegelmann is taking part in basic land navigation principles including the proper use of a danger crossing while performing squad movements. (U.S. Air National Guard photo by Tech. Sgt. Amy M. Lovgren)