they're maximum cool. >> reporter: they're maximum cool? >> yeah. i think they came here and teaching us, i appreciate that a lot. >> reporter: ben, adrian, and matt hope when they leave, other combat veterans will come and continue their mission. >> you don't have to come here as a combatant at all, you can come and do this, on a very basic level. if you have a specialty, if you have an urge, this is how it's applied. it's not imaginary, it's not magical. >> this is what the germans and french did for us during the american revolution, people came over and helped us train. >> it reminds americans of all ideologies, however they feel about this war, these are everyday people who want the same things that you and i want back home, right? peace, prosperity, opportunity for a better life for their