This isn’t related to the pig trauma training they provide for medics, but rather to optimize blood product usage in cases of massive blood loss. Similar idea but it’s not for training purposes, strictly research. They’d punch a hole in their spleen (I think), bleed them out, then try different strategies / combinations of blood products and other fluids to see how well it resuscitated the pig. They’d then get killed with an injection of blue juice (KCl solution).

I said no to animal research and stuck to obtaining the blood products from human volunteers and doing some analysis of blood drawn from patients in the burn ward who were getting treatment, which was another angle of research done there.