Potential infrastructure targets that appear to be more vulnerable than others

Are there certain potential infrastructure targets that appear to be more vulnerable than others?
Read the mission statements of agencies responsible for infrastructure security. Do they reflect objective and professionally credible approaches to securing critical infrastructure?
In your opinion, how effective are these agencies responsible for infrastructure security. Do they reflect objective and professionally credible approaches to securing critical infrastructure?
In your opinion, how effective are these agencies?
3-4 pages, include title and reference pages (do not count towards page count). Conduct outside research, provide citations and references per APA. Opinions should be supported by evidence and written in third person narrative.