A “federal prosecutor” plays a very important role in the criminal justice system. They are attorneys who represent the Federal government in a court of law and attempt to prove that a person or company committed a crime. In doing so, each prosecutor must always remember that he/she is a representative of the court and must behave fairly and provide justice to the country's citizens.

OPR.FOIA@usdoj.gov;

http://www.justice.gov/usao/eousa/kidspage/prosecutor.html