David Wetzel is a Master Black Belt with more than 20 years of experience with computer, call center, not-for-profit, auto, appliance, chemical, higher education, food/beverage and service organizations. He has held leadership positions in technical services, operations and program management. He has been a trainer in statistics and organizational change since 1985, consulting and facilitating teams with more than a dozen businesses in the United States, Mexico, Ireland, England and Asia. Mr. Wetzel has led the full deployment of Six Sigma in several large corporations. He has designed suites of Six Sigma training materials and provided consulting/coaching services for transactional and manufacturing companies. He can be reached at firstname.lastname@example.org.