I was watching episodes of a documentary series called Drug Lords with one of the big video streaming providers.
Strangely for me, while the whole documentary was narrated with American accent and the overall focus was on the fight of the US government/DEA against drug trafficking, the narrator used kilo/kilos a lot during his voiceover when referring to quantities of the drugs in question.
That struck me as odd, given the customary use of ounces and pounds when describing weights in the US.
Is the use of kilo in the context of drug trafficking commonplace and therefore to be expected, or would this - from the point of view of a native speaker from the US - be considered odd in any way?
Essentially what I am interested to find out is whether there are specific areas aside from the typical scientific use of SI units where it's customary to use metric units or whether this was perhaps done in order to appeal to international audiences. After all even NASA and NASAs contractors have been known to use US units for scientific projects, so to me the use of kilo was unusual enough to ask here.