@Fireslice04
It didn't seem as the 'alien' actually decided where to send the portal, and there's no mention YET as if he's the only one.
And to be fair, it would have a different sort of impact if it showed anywhere from 5 to 200 such encounters, at the same time, and they wouldn't have the time for an actual gathering (secure communcations between different countries is a possibility, but if they've evacuated key locations and facilities, that might be a bit hard to set up)