they're looking at things like regionalan anc regional, anesthetics, nerve blocks, if you have an injury to your arm, do a nerve block right away so the pain signal doesn't get started and go right to your brain. they're having a lot of success with this. and what they're learning in dealing with so many wounded troops may help them in the future. >> stop the cascade, give the pain medication early. don't brave it out. to stop the cascade. some of our greatest lessons in medicine have come from the battlefields throughout history. you've seen some of that as well. >> people don't realize, it's fascinating topic. it goes back to george washington and the revolutionary war. when there was the first real use of smallpox vaccines or inoculations, you know, think about that. all the way into the civil war, when they started doing am pew dags tagss and when they have large numbers of wounded, how to triage. how to prioritize, if you've got cases coming in, who do you deal with first. wars are great arenas for learning medical lessons. >> triage is how to do things now, but to think it had its