Discussion Questions: The vulnerability of shipping from a variety of threat vectors is well documented. Small Boats, floating IEDs, submerged attacks and CBRNE attacks. After reading this week's reference material consider all the threat vectors and pick the one you believe most probably in one of America's top twenty ports...i.e. Los Angles, Houston etc. Address why you believe that this threat vector is most probable. Additionally, consider port critical infrastructure such as oil refineries and their vulnerabilities. Pick a specific type of infrastructure and discuss what threat vector that you believe is most significant.