[TecoAndJix]

It is a reference to The Expanse (https://www.imdb.com/title/tt3230854/)

[tehbeard]

...no?

In The Expanse it was rocks from the belt coated in "stolen" Mars stealth material.

Luna's a UN colony, practically on Earth's doorstep, not a beligerent.

The Moon Is a Harsh Mistress is the reference.

[gerikson]

The Expanse authors got it from Heinlein, which was what I was referencing ;)