One of my regular habits, when my schedule allows, is a late afternoon water aerobics class at a local gym. They have a small outdoor pool, in a slightly claustrophobic enclosure off the locker rooms. It's relatively rare for us to see any air traffic above us while we splash, but today the sky was practically swarming.
We heard a high-pitched snarling sound, like an angry sewing machine. We all looked up - sometimes you see a police or a traffic copter - and there were three little propeller planes, the single-engine overhead-wing style, flying very low overhead in tight vee formation. Cessnas flying in close formation? I don't know if they were really Cessnas, of course; I don't wear my glasses in water aerobics class, so my vision is limited. They looked like Cessnas. What they did not look like was military fighter jets. Now, it is Fleet Week, and the Blue Angels are in town; but I never heard that the Blue Angels flew single engine prop planes. Maybe it's just copycats. Then they were gone, and we went back to exercises.
A little later we heard a lighter snarling sound, and one of the little planes flew back over by itself.
Finally, I happened to glance up and saw a blimp, floating silently past the south end of the pool. Not the Goodyear blimp; it had some kind of ad for tickets on the side.
I'd still like to know who was flying single-engine propeller planes in close formation.