research physical threats may affect the choice of physical security

Use the information found at:

 http://nces.ed.gov/pubs98/safetech/chapter5.asp 

to research how determining possible physical threats may affect the choice of physical security countermeasures while planning new or updated security systems.

1. should be in APA format
2. content should be 500 words 2 pages. [excluding title page and references]
3. 3 to 4 references 
4. no plagiarism