Defendant/Person Under Supervision means any pretrial releasee, probationer, parolee, mandatory releasee, mandatory parolee, or supervised releasee receiving drug/alcohol testing and/or substance use assessment/treatment, mental health assessment/evaluation/treatment, and or sex offense specific evaluation/treatment/testing while under the supervision of the Federal Probation or Pretrial Services Office. Hereinafter, the term defendant applies to those on pretrial supervision, whereas person under supervision applies to those on post- conviction supervision.