A research project relating to security management may require research beyond business articles and books. Government documents, regulations and statutes and other legal materials may enhance your research.
The U.S. Government Accountability Office provides "fact-based, nonpartisan information to Congress. Often called the 'congressional watchdog' GAO investigates federal spending and performance." Fderal spending often relates to government security including transportation, Homeland Security, and other disaster prevention and relief agencies.
These reports may be searched within the Business Source Complete database. Simply type in your search term(s), then, in the "Publication" line, type GAO Reports. Here's a tip sheet with more detailed guidance.
Military and Government Collection is especially helpful when searching for articles or government publications on natural disasters, terrorism threats, etc. Some common subject terms include