Safety Concerns Increase After A Man Was Assaulted At Tri-Towers Staff at the Housing and Redevelopment Authority say this is the first incident of this kind happening since the opening of the Rainbow Center's warming shelter. December 14, 2020 DULUTH, Minn. – A 73-year-old man is recovering from his injuries after being attacked at Tri-Towers by someone staying at the Rainbow Center’s warming shelter Terry Schnepp, a Tri-Towers resident, says he is still feeling the pain from his injuries after being attacked last week. “I’ve been living here for 10 years and never had anything like this happen,” said Schnepp. Monday night, a man staying at the Rainbow Center’s warming center attempted to enter the Tri-Towers building.