JACKSON - Nicole Dahl and Casey Steffensen announce their engagement. Parents of the couple are Joe and Alice Dahl of Echo, and Dean and Echo Steffensen of Arlington, SD. Dahl is a graduate of Yellow Medicine East High School, a recent graduate of Minnesota State University, Mankato, and is continuing to work towards her CPA. Steffensen is a graduate of Arlington High School and Ridgewater College. He is a Senior Design Engineer at AGCO in Jackson. An Aug. 21, 2010, wedding is planned in Jackson.