jay magner and dave johannes here to remember a pair of comrades on the anniversary of their deaths in vicious firefight. >> we had a ceremony yesterday at the base of hill 65 where the skirmish occurred. >> reporter: johannes suffers from ptsd. was this difficult for >> reporter: vietnam lost millions of civilians and fighters in the war, but with more than half its population born after the conflict, it has largely moved on. still, american vets like david clark have found their emotional healing in giving back, serving in organizations that helped this country recover from physical scars of the war. >> you know, i just -- it's my way of making amends to the vietnamese people. >> and on a personal note, da nang is the place my father served as an air force rgea. powerful to see with my own eyes. he's happy to see me here tonight. that's "nightly news." r all of us at nbc news, thanks for watching and good night. >>> right now at 6:00, it's finally here, a more affordable tesla. but that's not the only big change the palo alto company announced today. plus -- >> she like those beaches