This was part of a mating pair when I first saw it. After separating they were repeatedly approaching each other again, and landing, but I don't know which of these photos would be the male, and which the female. I didn't expect them to be mating this late in the season. I thought they were migrating, and didn't know they would mate during migration.
With multiple species of red Sympetrum / Meadowhawks here, I don't know how to distinguish them.