Chelsey Ann Lange and Joseph William Koopman are please to announce their engagement and upcoming wedding. Parents of the couple are the late John Thorstad, Lois 'Lange' Paul of Darwin, and Lyle and Brenda Koopman of Ivanhoe. Joseph is a 1997 graduate of Lincoln Hi in Ivanhoe and is currently employed by the United States Military at Camp Ripley in Little Falls. Chelsey is a 2005 graduate of Dassel-Cokato High School and will graduate in December from Southwest Minnesota State Marshall with a B.S degree in early childhood education. A September 11, 2010 wedding is planned in Alexandria where the couple resides.