Settled science, BB.
http://www.aoptix.com/products/high-capacity-wireless-transport/intellimax-mb-2000/
Super laser 10 km range with No degradation even in harsh rain or heavy fog.
Can also be used to blind and burn birds of all types!
Brave new world ~
RE: “Ongoing search for middle and last-mile solutions”
No degradation because of “Advanced Wavelength Diversity” — in other words, combining mm wavelength RF (attenuated by rain) and terahertz optical (attenuated by fog).