To be wed Kristy Penniston of Yankton and Luke Loen of Wakonda, along with their parents, proudly announce their engagement. Kristy is the daughter of Karla Penniston of Yankton, and Jeff and Stacy Penniston of Custer. Luke is the son of Sharyl and Jerry Loen of Wakonda. The bride will graduate this month with a bachelors degree in management from the University of Sioux Falls and is currently employed with the South Dakota Air National Guard, which she has been a member of for the past seven and a half years. The groom holds an associates degree in automotive technology from WyoTech and is employed in the family-owned business, Kneip GMC, out of Arlington. The couple is planning a June 21 wedding in Yankton.