John Stiller, a licensed professional engineer, Six Sigma Black Belt, and long time ASQ member, is director of industrial services for Apollo Associated Services LLC, provider of the world’s leading root cause analysis training, consulting, software, and investigations. He spent 26 years at Fortune 500 Ameren Corp., an ISO 9001 environment, where he oversaw major project management and computerized maintenance management systems, as well as business process modeling, improvement, and automation. John also launched and consistently improved Ameren’s overall root cause analysis program as a certified Apollo RCA instructor.