Discussion assignment.

Based on your reading material and other credibler sources, please write 300-500 words discussing the following:

• List and discuss some of the natural deterrence provided by topographies.
  Why should topographies be considered when designing or upgrading a facility?
  Provide the name of a known facility in the United States that used a natural barrier to provide protection and safety?
  What is the significance of physical barriers as it relates to this course?
• You need to have at least eight (8) different cited sources. 
• Each paragraph must have 4 or more complete sentences.