Are you interested in law and seeing it enforced? If so, then a criminal justice (CJ) degree is definitely for you! Of course, if you are searching for information about getting your online PhD in the field, then you already know that. A good friend of mine just recently graduated from a college in Vermont with his master's, and when I joked at his graduation about getting his doctorate, he laughed and said, "No Way!"
For many people, a master's degree in CJ or even a bachelor's degree may be sufficient for their desired jobs; however, many careers offer job advancement and/or job incentive bonuses for pursuing another degree.
Some of the jobs that CJ covers include: ATF agent, criminalist, private security, bailiff, criminologist, police detective, CIA agent, customs agent, police officer, coast guard, DEA agent, probation officer, compliance officer, FBI agent, private investigator, corrections officer, forensic psychologist, secret service, court reporter, forensic science sheriff, court clerk, INS agent, US Marshall, crime scene investigator, and paralegal.