Units can get you whatever med supplies you need; bonus, they want to donate (free of charge to anyone) a stretcher to each team (in team colors instead of bumblebee yellow) made from energy they've amassed so that when people *do* get messed up there's easier ways to move em.

The stretchers still technically need their pads stuffed and wheels attached, though, so if you wanna handwave vash having done this and maybe tested the belts and structural integrity or some bullshit as well as volunteering to deliver the items to the dorms, then they could give first aid supplies to restock clinic.

ALSO, assuming this first aid demonstration is related to the quest they gave him before, they'll supply whatever he needs to get the job done.