STRAFED! Sparrow Squadron Attacks with Divebomb Nest Defense

Barn swallows, yo. Second brood in progress. These are nesting under the cabin eaves and earlier believed they were CLIFF swallows supplementing the BARNs but nests are classic shelf-cup Barns. None of the distinctively different Cliff-type nests have been seen. Very much respect how the parents are joined by all in area in group defenses. Is this why one of the cats has refused to go outside in the daylight for the last couple weeks?