Yes they do, and they are helpful to people by eating fireants. Austrailia has such a problem with non-native fireants they had considered importing armadillos to control them.
I encountered fire ants when I visited Texas. I didn't know they can kill people!
Fireants are evil. I kill them with reckless abandon and glee whenever I have the opportunity. While setting fire to a fireant mound is not very effective, it is pleasurable.