I think these are the probes they're refering to...
And here's two more I prepared earlier in the windtunnel...
And on a Twin Otter...
BTW the Twotter has some interesting characteristics with the tailplane iced up and greater than 10 flap! - about 80 lbs out of trim and a right wing stall - way hay!
I suspect that the reason for testing over here in the Good Ole USA is that there's lots and lots of weather in the contiguous 48 and only one controlling authority and one set of overflight paperwork to write.