Militaries have been using point to point laser or microwave for things for decades. They've also used coiled fiber optics (and still do) for missles, etc. It'

Militaries have been using point to point laser or microwave for things for decades. They've also used coiled fiber optics (and still do) for missles, etc. It's really easy to blast an area with high power disruptive radiation (EFI, RFI, laser, etc.) to deny comms, though.