The author describes how the probation officer prepares the presentence investigation report that not only helps the court determine the appropriate sentence for the offender but also provides information necessary for planning a successful supervision strategy. The presentence report describes the nature and circumstances of the offense, the history and characteristics of the offender, the application of Federal sentencing guidelines, and available sentencing options. Officers who prepare presentence reports must be especially skilled at collecting, organizing, and analyzing information. The probation officer's other major responsibility is the supervision of Federal offenders. Whether acting as an officer of the court or as an agent of the Parole Commission or military authorities, the Federal probation officer must execute the sentence, control risk, and promote law-abiding behavior through correctional treatment. Probation officers must be especially adept at assessing the risks presented by each case and reducing those risks. Officers must also be skilled in counseling and motivating offenders; further, they must also choose appropriate means for responding to noncompliant behavior. Finally, officers must have the ability to discern deception and act accordingly. 2 notes