alan haberman was 81 years old. >>> prince harry is going back to afghanistan. the prince has genuinely taking to military service and has wanted to go back as he puts it to his brothers in arms for some time. his official title as lieutenant wales of the army air core. he served before in helmand province. he says it's a huge honor to fly the apache in combat. his father and brother are both pilots. >>> up next the extraordinary thing that happened when our colleague, colonel jack jacobs, decorated vietnam veteran came face to face with the enemy. >>> last night here we took you on a journey with one of our nbc news family. our military analyst, retired army colonel jack jacobs happens to be one of the 84 living recipients of the medal of honor, awarded by president nixon after jack sustained grievous wounds on a battlefield in vietnam. he recently returned back to that battlefield and last night we watched as he found the exact spot where everything briefly went blank one day in combat 40 years ago. tonight we see him meet the enemy, the former north vietnames