Things to now.

Haarp can be used to create a zone where icbms wsrheads cannot fly through. The eastman patents describe it as a way to protect against nuclear strike. I personally hope this actually works.

It can create a mirror like spot in the upper atmosphere to allow the operstor to bounce radiofeequancies back down to earth over the horizon. Those can look deep underground for tunnel and other undergroubd anomolies.

It can create spots allowing the suns output normally shielded to penetrate down to earth which can create unpleasant effects on the ground there.

Radio frequencies of a certain frequancy can load underground strata with energy and cause earthquakes.

Other countries also have haarps. Supposedly they can be daisy chained.

You can power aircraft and spacecraft with radio beams from the ground.

Thats pretty much all i remember.

There is a us patent for sending microwave signals to a persons head and stimulating it to create spunds within the head. Thise sounds can be the sounds of voices.

Thats all i remember ever seeing in the research but thats a lot!