Night, SEP, right across the lake.
Edit.
So I look up the details and flight history for this callsign.
Multiple similar flights. Never above 3300 feet.

Is this a flight training aircraft? Who approved these flights? Even wearing life jackets? (Of course, highly like to invert upon touchdown, into a cold lake with no boats anywhere close)
Maybe its me. I was nervous crossing Lake Michigan at 10,000, with life jackets on, a warm July day.