Book excerpt: In the wake of 9/11, Homeland Security has become the forefront of national issues and the center of a growing source of new employment. New careers are already opening, not only in military and law enforcement fields, but also in scientific research, cyber technology, bio-medical technology, disaster assistance and relief, air marshal operations, intelligence operations, and many other areas. This brand-new directory describes career opportunities in these and related security fields. The authors describe job designations in detail, and provide addresses, phone numbers, web sites, and a helpful glossary of Homeland Security terms. They also offer detailed advice on résumé preparation and making a good impression at a job interview. Additional information includes details on background checks and sources of specialized training that relate to homeland security. This brand new directory will be valued by a wide audience, including high school and college students, as well as law enforcement, military, and medical personnel who are looking to advance their careers.