Describe and apply the rules used in handling bomb threats:

The first concern is to protect the public by cordoning off the area immediately.

Both local and federal authorities should be contacted immediately so that appropriate bomb squad and hazmat resources can be allocated to the scene.

Describe the significance of 9/11 in changing the face of security:

The attacks of 9/11 fundamentally changed the face of U.S. security concerns to focus primarily on domestic threats of terrorism perpetrated by foreign-based Islamic militarism.

Identify security trends that will impact the security field over the next 10 or more years:

In the next decades, there is a distinct risk that terrorists will acquire fissile materials for incorporation into nuclear devices. Combined with Osama bin Laden's expressed intention to orchestrate a "nuclear holocaust" on the U.S., this may be the most serious threat to American domestic security...

The U.S. domestic security effort encompasses so many different agencies that it is very difficult to avoid some of the same obstacles of intelligence sharing that, in part, accounted for our failure to prevent the 9/11 Attacks despite having sufficient information available to do so (Dershowitz 2002).
References

Dershowitz, a. (2002) Why Terrorism Works: Understanding the Threat, Responding to the Challenge. New Haven, CT: Yale.

Halbert, T., Ingulli, E. (2000) Law & Ethics in the Business Environment 3rd Edition. Cincinatti, OH: West Legal Studies.

Schmalleger, F. (1997) Criminal Justice Today: An Introductory Text for the 21st Century. New Jersey: Prentice Hall