Celebration of life planned on Feb. 23 for Bob Hanson A celebration of life will be held for former Rossmoor resident and social justice activist Bob Hanson on Friday, Feb. 23, beginning at 10:30 a.m. at Mt. Diablo Universalist Unitarian Church, 55 Eckley Lane, Walnut Creek. There also will be a reception for family and friends. Those planning to attend should RSVP with Rick Sterling at