Gear up for career success in the dynamic field of commercial truck engine service, with the latest edition of the most comprehensive to guide commercial vehicle engines and their management systems available today! Ideal for students, entry-level technicians, and experienced professionals, MEDIUM/HEAVY DUTY TRUCK ENGINES, FUEL & COMPUTERIZED MANAGEMENT SYSTEMS, Sixth Edition, covers the full range of commercial vehicle diesel engines (from light- to heavy-duty), electric drivetrains, and the most current management electronics used in the industry.

Forensic Science: The Basics, Fourth Edition is fully updated, building on the popularity of the prior editions. The book provides a fundamental background in forensic science, criminal investigation, and court testimony, examining describes how various forms of evidence are collected, preserved, and analyzed, to outline how expert testimony-based on the analysis of forensic evidence-is presented in court. The book addresses knowledge of the natural and physical sciences, including biology and chemistry, while introducing readers to the application of science to the justice system.

While it has always been legal for a citizen in the United States to manufacture their own firearm, the sale and distribution of such items is illegal under current U.S. law. The primary impediment to individuals making their own weapons has been access to the tooling and machinery required to convert raw materials into finished parts for assembly. However, in the last fifteen years this paradigm has changed drastically. Home builders and companies have emerged to support individuals who choose to produce their own firearm. Kits with receivers and gun components are available for hobbyists, as are 3-D printable gun designs, downloadable from the Internet in some cases. This phenomenon has led to the term ghost guns: firearms whose existence is not reported to any third party and therefore whose existence is unknown and, largely, untraceable.