Tongans come from the same warrior culture as the Samoans. Many of the NCOs and SNCOs I most respected during my time in the USMC were Samoan.
No nonsense, tough and relentlessly professional. That was common enough to those I knew and worked for that it has become my basic stereotype of the Samoan people.
Oh, and that the tend to play every bit as hard as they work.
And their deployed detachment to Iraq is being assigned security in the Green Zone...