Welcome to the SAGE edge site Understanding Homeland Security, 3^rd edition, by Gus Martin. SAGE edge offers a robust online environment you can access anytime, anywhere, and features an impressive array of free tools and resources to keep you on the cutting edge of your learning experience.

• Mobile-friendly eFlashcards strengthen understanding of key terms and concepts.
• Mobile-friendly practice quizzes allow for independent assessment by students of their mastery of course material.
• Original videos feature interviews with the author and provide contemporary examples that relate back to the chapter content.
• Exercises and meaningful Web links that facilitate student use of Internet resources, further exploration of topics, and responses to critical thinking questions.