John Moubray's 1997 book Reliability Centered Maintenance outlined a comprehensive collection of the core principles and tenets of reliability centered maintenance-RCM. Originally developed in the 1970s, RCM has since been adopted by major industries, including the United States military and the aviation industry. Nevertheless, while Moubray's RCM2 provides an excellent academic description of topics associated with RCM, there are a number of important questions and topics that have been left unaddressed in print. In Reliability Centered Maintenance-Unraveling the Mysteries, author James Gehris offers a diligent and comprehensive expansion and companion that provides questions beyond the traditional RCM questions and definitions. With over thirty years of experience as a US Marine Corps maintenance officer using RCM concepts and approaches, Gehris provides a roadmap to help ensure that any RCM analyses are properly conducted and comply with the SAE JA1011 standard for RCM.