What changed?
Is the DS worried about something? Did the WH state there was a 'Trump speech' to scare/test certain individuals?
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True 5G uses 3 frequency ranges. The highest is in the "millimeter wave" range and is what the FAA and Heath Advocates are worried about. It has not been rolled out yet - in fact most of what is being called "5G" is really 4G LTE+, where the plus is a limited amount of the "mid" frequency spectrum.
Do you recall when AT&T first rolled out 4G, and got into trouble because it was not 4G, just 3G with a little boost? It's like that today with "5G". More of a marketing ploy than a fully deployed 5G network.