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Maryland police are using drones from a Chinese company that were banned in four states
(www.businessinsider.com)
This is a most excellent place for technology news and articles.
That doesn't appear to be a thing.
Their security seems to be a bit flaky though.
Here's the problem with these things... Even if it's not a thing right now, are you 100% certain it won't be a thing at some point in the future?
Electronics can very easily contain code, or outright hardware that changes after a set time or when given a signal.
It's the equivalent of having an agent of a foreign dictator and hostile power working as part of your police force. You don't know when it's going to turn, maybe it'll never move against you, but it's loyalties are elsewhere.