CRJU245 - Security in 21st Century

Week 7.5 Lecture

Purpose and Mission of Various Agencies

Public police and public security refer to government funded law enforcement and security efforts that concentrate on public locations and citizens in general. Public police agencies, and many levels and types of government bodies, have become more involved in public security efforts since terrorist attacks on September 11, 2001. These public police agencies and other government bodies are on the local, state, and federal levels, including the military branches. Whereas most public police officers focus on law enforcement, other officers may have public security duties, such as protecting a police building and other government buildings. Governments also employ uniformed security specialists who are involved in security duties, but they may also be law enforcement officers and make arrests when appropriate. For instance, on the federal level, the U.S. Secret Service and the U.S. Marshal’s Service are heavily involved in public security duties, but they also make arrests. The U.S. Secret Service's main focus is to protect dignitaries both foreign and domestic, while the U.S. Marshal’s Service protects courthouses and witnesses. The Federal Bureau of Investigation is a dominant law enforcement agency with broad domestic and international jurisdiction to control crime and enhance security. The FBI’s National Security Branch focuses on counterterrorism, counterintelligence, and intelligence while also providing intelligence to state and local police. The United States Department of Homeland Security also plays a major role in law enforcement and security efforts.

Below are various agencies that are involved in monitoring and deterring security issues:


  • FBI – According to the FBI website, the FBI is an intelligence driven and threat-focused national security organization with both intelligence and law enforcement responsibilities, the mission of the FBI is to protect and defend the United States against terrorist and foreign intelligence threats, to uphold and enforce the criminal laws of the United States, and to provide leadership and criminal justice services to federal, state, municipal, and international agencies and partners.

  • U.S. Department of Homeland Security – The United States Department of Homeland Security duties are to secure the nation from the many threats we face. This requires the dedication of more than 240,000 employees in jobs that range from aviation and border security to emergency response, from cyber security analysis to chemical facility inspector. Their duties are wide-ranging, and their goal is clear – keeping America safe! The mission includes preventing terrorism and enhancing security, managing borders, administrating immigration laws, securing cyberspace, and ensuring disasterresilience.

  • United States Secret Service – The United States Secret Service is a federal law enforcement agency with headquarters in Washington, D.C., and more than 150 offices throughout the United States abroad. The Secret Service was established in 1865 solely to suppress the counterfeiting of U.S. currency. Today, the agency is mandated by Congress to carry out dual missions: Protection of national and visiting foreign leaders, and criminal investigation.

Personal Security

There are many agencies monitoring the security needs for the public. We live in a dangerous world. The goal of keeping yourself safe and free from harm seems to be almost impossible to achieve. Even the most cautious and security conscious individuals sometimes get injured or killed. There are no guarantees. However, while safety cannot be guaranteed, it can be dramatically enhanced. All that is necessary for someone to improve his or her chances of avoiding danger is to learn a few basic rules of personal security. When discussing personal security, the term crime comes to mind. Personal security is often defined as security from crimes or criminal-like behaviors, particularly violence.


Humans are hazards to each other because they could harm each other, even accidentally. Criminal threats may consist of crowds, mobs, looters, thieves, robbers, detainers, kidnappers and hostage takers. Managing criminal hazards and threats has at least four important steps.


Those steps are as followed:

  1. Establish the facts at current time.
  2. Assess the threat at current time
  3. Recommend ways to defend the potential target (reduce exposure and vulnerability).
  4. Recommend a strategy for managing the hazard or threat