1. What is critical infrastructure, and what are key assets? Explain how they differ and how they may be interrelated. 2. Compare and contrast accidental versus intentional mechanisms with respect to probability and magnitude and the overall effects of each. 3. Use the HVA Matrix to produce one plausible technological hazard/scenario assessment for your community. 2. Compare and contrast accidental versus intentional mechanisms with respect to probability and magnitude and the overall effects of each. 3. Use the HVA Matrix to produce one plausible technological hazard/scenario assessment for your community..