The major categories of services and equipment for which manufacturer and distributor information is provided are administration, communication, computers and software, corrections, EMS and hazmat, identification, investigations, security, shooting accessories, surveillance, tactical equipment, traffic enforcement, training, uniforms, vehicles, and weapons. Under each of the major categories, numerous subcategories of equipment and services are listed. For each of these subcategories, the names of the manufacturers and distributors that provide the products and services are listed alphabetically. A separate section of the guide lists alphabetically the names and contact information for each manufacturer and distributor, along with the services and equipment it offers. The contact information includes the address, phone and fax numbers, Web site address, and e-mail address. In addition to the Buyer's Guide, this issue contains sections on new products and technology and an index of articles in the various 2003 issues of "Law Enforcement Technology."