Just curious. I don't really remember having any good/if any at all speakers like that in HS. However in college some of the memorable classes are when you have speakers come to your class and talk about their first hand experiences with you. Good for you.
you'd like my "history of war" elective then - i have several quest speakers a month, from 90 year old ww2 fighter pilots to 19 year old former students and now current army rangers back from afghanistan
my favorite was when one fool fell asleep during a new jersey vietnam vet's visit - the vet's name was lou - he was blown up by a malfunction artillery shell in the midst of a firefight and seriously mangled - he's in a a wheel chair now and still plenty scarred 40 years later - nonplussed by the kid, he tore into him w/ a vengeance, beating the kid's desk w/ his cane and shouting "i didn't get blown the fuck up so you can sleep through my fucking story, kid!" the kid sat bolt upright, beat red, for the next half hour.