Sarah Hanlon and Joe Rytting have announced their engagement. A September wedding is planned.Sarah is the daughter of Ted Hanlon and Leslee Gallion, both of Cheyenne, Wyo., and Joe is the son of Loretta Siscoe of Amarillo, Texas and the late Michael J. Gonzales of Cortez.The bride-to-be graduated from the University of Wyoming with a degree in rangeland ecology and watershed management. She works for the Natural Resources Conservation Service in Springfield, Colo.The groom-to-be graduated from Lamar Community College with a degree in horse training and management. He works for MT Swanson Farms in Walsh, Colo. The couple will make their home in Vilas, Colo.