peter armstrong, vincent.metimes soldiers sit on a stack on my flat pile for a while because i want to draw them when they want to be drawn opinion >> he also talks about the portraits that he's drawn over the time that he's been doing this 4,500 portraits, as a matter of fact. he won't draw a portrait until he feels it's time. >> that's why i'm doing this now. >> on this day it's time to draw alvin. he said it's his way of giving back. >> when i came back from vietnam i felt i had this debt. didn't know what it was. trying to payback my friends. i sit here really for all these hours for nothing. other than the fab thct that th human being died for me and he didn't know me. >> he's still serving. that's the thing. >> he also tells us why he uses pencil. >> i'm writing a story. i may be doing a portrait but believe me when i tell you i'm writing a story. >> does he keep these pictures or scene them to families. >> michael is a important psychiatrist artist by career but for anybody who has a fallen service memb