A ring of top-secret laser satellites is mentioned by the secret agents in It's All In Your Head. It is apparently costly since one says it is worth 100 billion dollars, though only space junk without the access codes, on a USB key disguised as keychain shaped like an ice cream cone.
It is part of Operation Aliens Go Ka-Blooey.
One thinks it can zap any alien fleet into oblivion if they come near the Earth. Another says it was recently launched into orbit.
Coop and Dennis are happy to learn there is now a line of defense against aliens besides themselves, while Kat is concerned about this ring.