If you have already sent in your resume and other things that are necessary to apply for jobs, I would suggest calling the companies to see if they received your information and ask if there is any else they need. Calling potential employers, even if they have not called you, can show them that you are really interested in the position. Many people applying for jobs do that.
From the following site:
UWM, CJ Jobs
For some of the positions, you could have your own business. But, there would be licensing, maybe some education and certainly registering where you will be wanting to work as a private business.
Some career possibilities in criminal justice fields:
Border Patrol Agent, Computer Security Expert, Court Administration, Criminal Investigator, Deputy Sheriff, Criminalist, FBI Special Agent, Insurance and Fraud Investigator, Internal Revenue Special Agent, Legal Assistant, Police Officer, Private Investigator, Security Guard, U.S. Secret Service, Correction Officer,
Warden, Court Officer, Customs Inspector, Deputy U.S. Marshal, Evidence Technician, Federal Protection Officer, Intelligence Analyst, Internal Security Advisor, Police Detective, Postal Inspector, Probation Officer, State Police Officer, Youth Counselor, Statistical Research Analyst, Bureau of ATF Agent, Domestic Violence Counselor, Environment Protection Specialist, Pre-Trial Services Agent.
LAW ENFORCEMENT- The primary responsibilities in this category are the maintenance of peace, the prevention of crime and the supervision of criminals.
CORRECTION AND REHABILITATION - Workers in this category maintain the security, safety, guidance and supervision of criminals. They also provide corrective retraining programs to enable criminals to reenter society.
JUDICIARY- The court systems handle individuals once arrested and charged with a crime. The courts determine the action to be taken in each case. Employment opportunities are found in the following areas:
GOVERNMENT- Most government agencies give written civil service exams, and provide their won training, require a physical test, and train on-the-job during a probationary period. Many positions require a background investigation and reference check.
Local - There are a variety of opportunities primarily in police departments, which include patrol and vehicular enforcement, investigation, vice operations, juvenile delinquency, preventive programming, planning, personnel, communications and laboratory technology.
County- Law enforcement duties vary from county to county across the nation. Most are employed as sheriffs and deputies serving similarly to police and performing duties in patrol, vice, juvenile, investigators and traffic control. Duties may include tax collection, correction and rehabilitation, process serving and court attendance.
State - The state police and highway patrol are two well-known areas of enforcement in the state system. They provide law enforcement during civil and natural disorder, protect the state parks and recreation facilities, control and enforce traffic, investigate organized crime,narcotics, fraud and gambling activities and add support to the local police.
Federal- The federal government offers a wide variety of opportunities. Each agency or service has specific duties and responsibilities which may involve investigations, protections, intelligence, law enforcement, or prevention of crime. A small sampling of possibilities is: FBI, Customs Service, Drug Enforcement Administration, Secret Service, Immigration and Naturalization Service, and the Defense Department. Some agencies have very high standards in educational background, intelligence and physical ability.
PRIVATE SECTOR- Over one million people are employed in security in manufacturing, retail, industry, educational institutions, public transportation, health facilities, and financial institutions. Many major corporation and businesses have their own security forces, while others hire from security agencies. Another field in the private sector to consider is legal assisting. Legal assistants work directly under a lawyer's supervision doing background research and preparing legal arguments, draft pleadings, contracts and mortgages and separation agreements.
NON-PROFIT- Organizations that serve the public in specific areas employ many from the criminal justice system. Often these nonprofit agencies support and work with juvenile delinquents, the homeless, drug and alcohol abusers and previous criminals. Employment is found in community centers, youth service organizations, social service agencies, volunteer agencies, rehabilitation centers, and health welfare agencies. People who work in these settings have a sincere desire to help others and have concern for the community and society. They must have knowledge of other community resources in order to make referrals.
The field of criminal justice is constantly changing to meet the new demands of a changing society. Employment opportunities are expected to increase faster than average for all other occupations. The most stringent competition is in intelligence and computer technology. Demands for police work will continue to increase both in numbers of those employed and in the complexity of the job as this field assumes more sophisticated methods of handling duties. As court caseloads increase, there will be a significant increase in the need for professional court managers. As private security firms assume more of the routine duties of police, opportunities will increase, both within private security firms and with security departments within individual corporations. Specialists are becoming more and more essential to this field.