What is Homeland Security?

Complete the assigned readings listed at the beginning of this unit, including The National Strategy for Homeland Security (2002-2007) and the Changing Homeland Security: What is Homeland Security?, and then address the following questions as they pertain to the definition for homeland security provided by The National Strategy for Homeland Security:

Has the term as defined in 2002 grown to encompass more? .
Should the definition be changed? .
If so, what elements should be included in the new definition? .
If not, why should it stay the same? .
Do you agree with Dr. Bellavita’s assessment of seven defensible definitions for homeland security? .