Definition

Ten years after the September 11, 2001, terrorist attacks, the U.S. government does not have a single definition for "homeland security." Currently, different strategic documents and mission statements offer varying missions that are derived from different homeland security definitions.  Historically, the strategic documents framing national homeland security policy have included national strategies produced by the White House and documents developed by the Department of Homeland Security  (DHS).
Reese, S. (2013, January 13). Defining Homeland Security: Analysis and Congressional considerations. Retrieved from http://fpc.state.gov/documents/organization/202869.pdf 

Terms to Search

antiterrorism, antiterrorism measures, biological warfare, chemical warfare, border patrol, border security, chemical and biological preparedness, chemical warfare, civil defense-United States, community resilience, counterterrorism, crisis management, cyber crime/security, diaster medicine, diaster relief, domestic intelligence, domestic preparedness, emergency management, emergency preparedness, hazard mitigation, homeland security, incident command systems-United States, industries-Defense measures, internal  security-United States, mass casualties, military, national security, national security-United States, nuclear crisis control, nuclear terrorism,  Red Crescent, Red Cross, rescue work, safety measures, terrorism, terrorist groups, terrorism prevention, USA PATRIOT Act  (sometimes PATRIOT Act), War on Terror, War on Terrorism, Weapons of Mass Destruction  (WMD)

Databases

This link allows searching across all Library databases.

Online Open Access Journals

DOAJ:  Directory of Open Access Journals
DOAJ is an online directory that indexes and provides access to quality open access, peer-reviewed journals.
Disaster Recovery Journal
Emergency Management
Global Security Newswire
Global Security Studies  (GSS)
HS Today
Journal of Homeland Security and Education
Journal of Strategic Security
Perspectives on Terrorism

Print Books

This link provides a listing of all print books in the Library collections.

eBooks

Books 24x7
Credo Reference
eBooks by EBSCOHost
Safari Books Online

Websites

Homeland Security Search Engine
This will search all of the websites listed below simultaneously or you may choose to select specific search site(s) to search.
Bureau of Intelligence and Research
CATO Institute
Center for Disease Control and Prevention
Center for Immigration Studies
Center for Strategic and International Studies
Central Intelligence Agency  (CIA)
Congressional Research Service Reports on Terrorism
DTIC Online  (Defense Technical Information Center)
Department of Health and Human Services—Public Health Emergency
Department of Homeland Security
Disaster Information Management Research Center
Disaster Resource Guide   
Environmental Protection Agency—Emergency Management
Federal Communications Commission Public Safety and Homeland Security Bureau
This Bureau ensures public safety and homeland security by advancing state-of-the-art communications that are accessible, reliable, resilient, and secure, in coordination with public and private partners.
Federal Digital System  (Government Printing Office)
Federal Emergency Management Agency  (FEMA)
Federation of American Scientists Congressional Research Reports
FedStats
Homeland Security Studies and Analysis Institute
House Committee on Homeland Security
The Jamestown Foundation
National Archive of Criminal Justice Data
National Counterterrorism Center
National Institute of Justice
National Intelligence Council
National Oceanic and Atmospheric Administration  (NOAA)
National Security Agency 
The National Security Agency/Central Security Service (NSA/CSS) is home to America's codemakers and codebreakers. The National Security Agency has provided timely information to US decision makers and military leaders for more than half a century.
National Security Archive
National Security Council
This is a division of the White House that brings together all the administrative leaders to work with the President to discuss issues of national security and foreign policy.
National Weather Service
Natural Hazards Center
Office of Response and Restoration Emergency Response Program
Office of the Director of National Intelligence 
The vision of this department is to make the United States a more secure nation by integrating 17 executive branch agencies that make-up the Intelligence Community.
Public Health Emergency
RAND Corporation
Ready.gov and Listo  (Spanish language version)
Launched in February 2003, Ready is a national public service advertising (PSA) campaign designed to educate and empower Americans to prepare for and respond to emergencies including natural and man-made disasters. Ready and its Spanish language version Listo ask individuals to do three key things: (1) build an emergency supply kit, (2) make a family emergency plan and (3) be informed about the different types of emergencies that could occur and their appropriate responses.
Terrorist Organization Profiles
Thomas
US Department of Defense Quadrennial Defense Review 
US Department of Justice, National Security Division
The mission of the National Security Division is to carry out the highest priority of the Department of Justice-to combat terrorism and other threats to national security.
US Department of State,  International Security and Nonproliferation  (ISN)
The ISN Bureau leads the Department's efforts to prevent the spread of weapons of mass destruction (WMD)-whether nuclear, biological, chemical, or radiological-and their delivery systems.
US Government Accountability Office  (GAO)
USA.gov
World Criminal Justice Library Network