So after confirmation with some co-workers, it seems as though I'm missing out. Apparently they still do the chamber as part of basic but it must have been down when I went through.
You got lucky

It was '94 that I had the pleasure. Think drowning and burning alive at the same time. Felt super good after though, and a big accomplishment/achievement knowing that under the circumstances your mind/body can and will still do what it needs to do. They don't let you out until everybody in it is following orders.
Afterwards some of the drill sergeants did pushups in it for fun just to see who could last the longest Lol!