There used to be more carts, and more people, but then everyone went mad, or died, or both. Turns out they've got an ominous organisation in their sub-sub-sub basement, researching ancient alien tombs and releasing sentient viruses from god knows what planet or dimension. Whoops.

"Not a clue, honestly. Some of the stuff looks old. Maybe it's just scraps from whatever used to be here."

So hey, about that inconspicuous subject change...

"Hey, uh, those broadcasts you do, is that a recent thing, or- or did you do that for a living?"