The sentencing guidelines do not apply to a defendant sentenced under the Federal Juvenile Delinquency Act (18 U.S.C. §§ 5031-5042). However, the sentence imposed upon a juvenile delinquent may not exceed the maximum of the guideline range applicable to an otherwise similarly situated adult defendant unless the court finds an aggravating factor sufficient to warrant an upward departure from that guideline range. United States v. R.L.C., 503 U.S. 291 (1992). Therefore, a necessary step in ascertaining the maximum sentence that may be imposed upon a juvenile delinquent is the determination of the guideline range that would be applicable to a similarly situated adult defendant.