District court's sentence of 240 months imprisonment and a life term of supervised release on a defendant convicted of knowingly transporting a minor in interstate commerce with intent to engage in sexual activity and related offenses is affirmed where: 1) district court's use of uncharged conduct in determining defendant's sentence did not violate the Sixth Amendment; 2) district court did not err by relying on uncharged conduct that was proven by the preponderance of the evidence standard; and 3) the district court did not commit reversible error in calculating defendant's Guidelines range, and the sentence was therefore procedurally reasonable.