In an oak tree. Moving too fast, so observation is more than one individual.
Multiple of larger ant surrounded by swarms of other smaller ants
Dexter Park
Really bad photos. I was about to take a photo of this ant that was running around and didn't notice there was a black widow (adjacent observation) that must have jumped out of a cavity and bit this ant as it quickly started showing effects of venom
On Willow
iNat is saying Argentine Ant
These ants were apparently milking the aphids on this Willow branch. I looked on on branches and there were no aphids or ants.
The aphids are here: https://www.inaturalist.org/observations/233103681