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Sheriff David A. Clarke Jr. (born 1956) is the 64th Sheriff of Milwaukee County. In 2002, Clarke was appointed to a vacancy by Governor Scott McCallum, and later elected that same year to his first four-year term. He was re-elected in November 2006, 2010, and 2014, and is currently serving his fourth full term.
David is the President and CEO of DMM Management. He began working in the wireless industry in 1987, and formed DMM Management in 1993. To read more about David, click HERE. Mark is the COO of DMM Management, He began his wireless career in 1987, and joined DMM in 1999 as the General Manager of Operations. To read more about Mark, click HERE. Donald is the CFO and Director of Engineering for DMM. He started his career in the wireless industry in 1997, and joined DMM in 2011.