CHICAGO--(BUSINESS WIRE)--Madison Dearborn Partners, LLC ("MDP"), a leading private equity firm based in Chicago, today announced the formation of a partnership with industry-veterans Damon Griggs and Jon Brooks to pursue investments in the federal government technology sector. The former Dovel Technologies ("Dovel") executives have extensive industry expertise and an impressive track-record of delivering growth, which will complement MDP's investment experience in the federal government techno