2015, [ he answers, still eyeing her warily. ] And trust me, you don't always hear about it. Apparently there was this big thing last year in the middle of New York where the titans rose up to fight the gods and the whole camp was involved? Didn't know the first thing about it until I got the whole spiel from someone here.

[ To be fair, he hadn't been paying much attention to TV at the time, being on the run, but that's beside the point right now. ]

And there's the Mist which'll hide things if you don't know what you're looking for, even for demigods. I can't always see through it, either, so maybe that's it.