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Challenge Unlimited Inc., is a multi-tiered organization headquartered in Alton, Illinois, and affiliated with Residential Options, Inc., Advanced Outsource Solutions (AOS) Staffing, and Project CU. Our Mission is to provide opportunities for individuals with disabilities which will assist them to live, work, and participate in the community. We are part of the AbilityOne Program with operations in IL, MO, OH, SC, and WI. We offer opportunities for Staff and Clients (an individual with a qualifying documented disability).