Sgt. Biannca Clarke proudly displays her graduation certificate, as she holds her younger son, O’Dell, 2. Clarke, an active duty Marine and single mother of two, earned a bachelor’s degree in psychology from Ashford University. - Sgt. Biannca Clarke proudly displays her graduation certificate, as she holds her younger son, O’Dell, 2. Clarke, an active duty Marine and single mother of two, earned a bachelor’s degree in psychology from Ashford University.