In a per curiam decision, conviction and sentence for possession with intent to distribute marijuana is affirmed where: 1) the district court did not err by denying co-defendant's motion to suppress; 2) the district court did not abuse its discretion in connection with co-defendant's expert testimony; 3) the district court did not commit reversible error by instructing the jury on a theory of deliberate ignorance; and 4) the district court did not violate co-defendant's Sixth Amendment rights at sentencing.