RUSSELL - Brittni Peterson and Lukas Dubbeldee announce their engagement. Parents of the couple are Scott and Michele Peterson of Russell and Lyle and Julie Dubbeldee of Tyler. Peterson is a 2011 graduate of RTR and a graduate of Lake Area Technical Institute for dental assisting. She is employed at Dr. Carlson's Family Dentistry in Brookings, S.D. Dubbeldee is a 2010 graduate of RTR and a graduate of Lake Area Technical Institute for agriculture. He is employed at Titan Machinery in Pipestone as a AFS specialist. The couple plans a Sept. 28, 2013, wedding in Russell.