The mission of the DEA is essential to making our nation safe from drugs and terrorism by working to dismantle drug trafficking organizations, prosecute drug traffickers, and destroy the financial infrastructure of these organizations. Often, our work is very sensitive in nature. All candidates for employment with DEA are required to pass a background investigation to become permanent employees. A background investigation is one of the final steps in the application process that seeks to discern a comprehensive snapshot of your personal history, education, work experience, personal and professional references, and other information. The time it takes to complete a background investigation is dependent on the type and scope of investigation being conducted.