37 Um, anons..! Radioactive flight pattern off palm beach county Florida coastline Callsign - C6591- Eurocopter MH-65D Dolphin posted 2 years ago by aslan_is_0n_the_m0ve 2 years ago by aslan_is_0n_the_m0ve +37 / -0 11 comments share 11 comments share save hide report block hide replies
That is a vector search pattern commonly used by the Coast Guard: https://www.brighthubengineering.com/seafaring/41039-types-of-search-patterns-sector-search/