. >> scranton: so jason shaw volunteered to go back to iraq. >> enemy, 9:00, 100 meters! >> enemy, 9:00, 100 meters! ( gunshots ) >> nice! >> good stuff. >> this is my third tour to iraq. in 2003, we did the initial push into iraq from kuwait all the way up into baghdad. we stayed there for a while. we called it "hotel hell." ( laughs ) 2005, we went back, did personal security detachment in baji, balad, tikrit and samarra. five cities. ( gunshots ) >> good shot! >> there's been a lot that's happened, a lot to deal with. ( gunfire ) it makes you not care about anything. you're dead, son! you're dead, son! i did counseling at the va. i saw a psychiatrist and a psychologist. they said i had ptsd. which, obviously, a lot of people have. i'm the best gunner there is, son. a lot of these new guys who've never been over there before don't know what they're getting into. so i figure if i've been there one, two, three times before, you know, there's something i can do for the good of the cause, so i'd like to go back again and maybe do one more tour. this is it... ( laughs ) so..