The Iowa Mennonite School says a 2006 graduate has been killed in a motorcycle accident. 22 year old Jason Marner grew up in the Brighton area, and recently graduated from Eastern Mennonite University in Harrisonburg, Virgina with a degree in business.  He was killed yesterday morning in Harrisonburg, where he was employed by an aviation company.  Jason Marner is the son of Stan and Joann Roth Marner, both graduates of the Iowa Mennonite School.