This guide provides information to law enforcement, corrections, and forensic science professionals to assist them in evaluating, acquiring, and using equipment and technology. The main body of the guide presents an overview of the technology of most concern to the law enforcement, corrections, and forensic science communities. It contains 19 chapters arranged in four sections. Section I, "Officer Protection and Crime Prevention," contains eight chapters that focus on protective equipment, restraint systems, firearms, less-than-lethal weapons, pursuit management surveillance, offender monitoring/officer location, and concealed weapon and contraband detection. Section II, "Public Safety in Critical Incidents," is composed of three chapters that cover explosives detection and remediation, chemical and biological defense, and transportation infrastructure security. Section III, "Communications and Information Technology," contains five chapters that address communications interoperability, biometric identification, information sharing and analysis, crime mapping, and electronic crime/cybercrime. Section IV, "Investigative and Forensic Sciences," consists of three chapters that focus on crime laboratory assistance, forensic technology research and development, and investigative sciences. Each chapter includes a description of relevant technologies (equipment and devices, software, and related training) available to local law enforcement, corrections, and forensic science professionals and lists the following: potential funding sources, standards and testing, research and development efforts, and sources of further information. Four appendixes provide supplemental information on the Justice Department's Office of Justice Programs and Office of Community Oriented Policing Services.