which is a noble gas.
Remember the Xenon searchlights on tanks--They want to show that they are willing to shine a light on their internal operations because they have nothing to hide.

Xe is also an inert gas--Thety want to show they are very stable and not prone to "react" at a moments provocation.

I'm surprised no one else in this august group picked this stuff up--no wonder the bad guys are whipping us at the strategic communications game.