How do federal agencies communicate homeland security information to local and state government, the private sector, and the citizenry of the United States? What problems exist? How can communication and information sharing be improved? Consider all sources and methods of information sharing and any changes since the publishing of the textbook. Specifically, answer these questions:

What is the biggest potential for failure when people (and the government) rely on social media (Facebook, Twitter, etc.) for information in an emergency? Are there (have there been) instances where social media has created a bigger problem than would have existed otherwise? (cite examples)
What are the contributions and capabilities of Ham (amateur) radio in emergency communications? Why is Ham radio often effective in emergencies when government communications systems fail? Can you identify a principle that seems to be proven by the effectiveness of this citizen-performed vital service?