I'm reminded of the Sonic Tank from the old Dune 2 RTS. I wonder if sound is finally being weaponized or if it's actually microwaves as others have suggested? But just as curiously, what is the motivation for this, what could someone achieve by doing this? Is it a form of gaslighting? Or someone trying to sour the relationship between Cuba and US/Canada? (either dissidents or another state) In some ways this has a similar "shooting pigeons with cannons" high-tech overkill smell to it as the polonium poisoning of that Russian in the UK a decade ago.