Some smarty

There is a special 'Bio-Security' taskforce who's job it is to seek and destroy fire-ants... to eradicate them.!!
The helicopters use specialised heat-seeking equipment, like a radar from the air, sort of.,
fire ant nests apparently have a particular 'heat-signature' unlike native ant nests.
Fascinating isn't it. ?
I hope they succeed, because we really don't want these ants getting established in Australia.
The wee beasties originate in the Sth American rainforest I think, and spread north till they now reside in much of the southern US, as well.
And now here. But so far, I believe, only parts of SEQ are infested.... the idea is to stop them here, before they can spread. It is sort of a 'horror movie'.