That's a pretty long acronym. Why was there a need for orbital defense? Or was it technology for technology's sake?

[And now the reasons people lost some of their powers or strength are clear. At least, it makes sense - the turtle's energy powered everyone. The further they got from Tu Vishan, the weaker they were - and it wasn't because of something on the mainland. Annabeth's suddenly grateful her brain can't be taken away like other physical abilities.]

How often does it port here? What else can you do?