Search individual databases. Most relevant for this subject are:
1. Try a title or keyword search on your topic.
2. Look for useful "subject" or "descriptor" words. These will either be in a list on the results page, or you may need to look at a number of individual records.
3. Go back to the search screen and search BY SUBJECT/DESCRIPTOR (not by title/keyword) using the words you discovered in step 2.
4. Be sure to take advantage of:
5. When you find an item you want, use ArticleLinker to get it.
Check out specific online subscription periodical titles on Homeland Security:
At Issue: Homeland Security
Borders Matter: Homeland Security & the Search for North America
CQ Homeland Security
Current Controversies: Homeland Security
Department of Homeland Security
Homeland Security Review
Check out specific online subscription periodical titles on Terrorism:
At Issue: Are Efforts to Reduce Terrorism Successful?
At Issue: Is Military Action Justified Against Nations Thought to Support Terrorism?
Critical Studies on Terrorism
Current Controversies: America's Battle Against Terrorism
Opposing Viewpoints: Terrorism
Studies in Conflict and Terrorism