Yes, Im also glad im not the only one who noticed this. But it also seems to be they disapper after a few days too, maybe instance mods banned them or they just got bored.
Other then the fact that this is happening in Yeman, the US would likely issue a "proporstional" response. Take a look at when Iran almost sunk a US destroyer (I think it was a destroyer), and in return iran had half of there navy sunk in 8hr.
You dont need keys if you can throw a brick through a window.