It's the joint personnel support unit. That's where they send injured members to possibly heal, and if they don't, they end up releasing them. I've heard from my friends who were in that unit that it was a little smoother and helped them a lot more. Again, because of my five-month timeline from my release, I didn't want to have to go to another unit, possibly have my file lost, or this or that thing screwed up, so I opted out of it.
On May 13th, 2019. See this statement in context.