Military exercise Michigan.
https://www.owensoundsuntimes.com/news/local-news/military-exercise-likely-behind-booms
Potus Trolling
Q Fishing
Trolling definition
troll 1 (trōl) v. trolled, troll·ing, trolls v.tr. 1. a. To fish for by trailing a baited line from behind a slowly moving boat. b. To fish in by trailing a baited line: troll the lake for bass. c.