Don't tell your wife, but there are whole youtube channels on this. They go around searching for missing people in bodies of water. They find more missing people than I would've thought.
It was initially, but they've been hardened against drones. Anti drone techniques have caught up. Wireless jamming has caused drones to be tethered to fiber spools for control.
In mid-December, the 20-year-old Minneapolis resident was walking through the city’s Cedar-Riverside neighborhood when federal immigration officers stopped him. He offered to show identification. They refused, according to reporting by Sahan Journal.
Sounds like they're intentionally extending a terry stop.
Youtube channels Adventures with purpose, echo divers.