Well, the room itself is apparently a cargo bay. The containers in the back have the icons and signage from the TMP cargo bay. Which is driving me a little nuts, because the reason for that big capsule-shaped icon divided into quadrants is to show where each container went in its capsule-shaped slot in TMP. WHy are they there with these pentagon-shaped crates? I'm honestly a little baffled, now that you've pointed out the "chapel" backing is taken straight from "Balance of Terror," that they'd do their homework to such a degree to get a really obscure piece of set-dressing, but apparently just grabbed "movie-era cargo crate icon" out of some database of Star Trek signage without actually looking at the TMP cargo crate in context.