What kind of ants are these?
I'm not ready yet to call them winged ants; consider that they may be parasitic wasps. Do a search for parasitic wasp images/photos. Take some samples to a country extension office, agriculture office, etc.
They are not termites.
The photos are helpful, but not as crisp as my eyes need. What I am seeing is that their wings are longer than their body, and are parallel with their body. Ants typically have shorter wings that are more perpendicular to their body.
If they are wasps, nothing to worry about or do. Probably won't happen again. If they are ants, seeing winged ants indicates a reproductive swarm. Do you see small, unwinged ants in the same area on occasion? If so, liquid ant bait stations work well on the small ants. Keep us posted. I'm curious.