Colleen (Morrissey) Hazen, 60, of Great Falls, a college professor for the College of Great Falls MSU, died of natural causes on Saturday, April 13, 2013 at her home.A memorial service is planned for a later date in May. Schnider Funeral Home is handling arrangements.Survivors include her sons, Tom Hazen and Dan Hazen of Great Falls.She was preceded in death by her husband, Jerry L. Hazen; and son Rick Hazen.