 In September 2010 he accepted a position as the Chief Operating Officer (COO) of McNeil Technologies, now AECOM National Security Programs.In September 2010, Dr. Charles (Chuck) Tolleson became the President and General Manager of GLS.Chuck holds a doctoral degree in Organizational Management and is a career military officer with nearly 10 years of experience in executive contracting in the Departments of Defense and Energy, specializing in quality, strategy, processes, systems and management assessments.