Contact Us We work with clients that want to win. Chicago Office 333 N Michigan Ave #800 | Chicago, IL 60601 Open in Google Maps Leadership: Don Young Founding Partner, CEO Email: change@c5mi.com Derek R Dyer Managing Partner, CFO Email: change@c5mi.com Marty Groover PartneR, CTO Email: change@c5mi.com Angie Frederick COO Email: change@c5mi.com Shane Michael Dixon Director, Program Management Office Email: change@c5mi.com Spencer Ocean Director, Systems and operations Email: change@c5mi.com