Read enough of the BS on here from those with an agenda, DJI actually posted an awesome response based on facts, something a certain individual on here purposefully avoids because they don't serve his purpose. These are amazing, thoughtful responses:
https://www.regulations.gov/document...019-1100-51823
And Google depended us, the traditional line of sight modeler:
https://www.regulations.gov/document...019-1100-51456