Have you noticed this?

[j0be]

Radon Labs was a German gaming company. But with KC's penchant for mixing a few of the numbers in unit identifiers or leaving them out (like with the 10th Mtn Div) maybe this could be reference to Raytheon type company. Raytheon is a defense contractor that mainly deals with electronics, weapons and the like, but maybe in the story has something to do with the outbreak.

IDK I do have a habit of reading to much into the story (my helicopter tangent for example).

Or it could be a fictional company like Locked and Loaded