Denial of minor-participant sentence reduction was within court's discretion where the deft helped to pilot the craft with the drugs through a dangerous ocean voyage.
Within-guidelines sentence substantively reasonable.
http://media.ca1.uscourts.gov/pdf.opinions/17-1229P-01A.pdf
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.