SIOUX FALLS, S.D. - David Missal and Sarah Wyffels announce their engagement. Parent of the couple are Timothy and Julie Missal of Forest City, Iowa, and Ward and Eve Wyffels of Marshall. Missal graduated in 2010 from Augustana College with a bachelor's degree in business administration and history. He is a financial representative for Thrivent Financial in Sioux Falls, S.D. Wyffels graduated from the University of Minnesota Duluth with a bachelor's in science. She obtained her nursing degree from Concordia College. Wyffels is a registered nurse at Avera McKennan in Sioux Falls. The couple plans an Aug. 10, 2013, wedding at Holy Cross Lutheran Church in Sioux Falls.