i'm lieutenant mike mccardy. i'm from decora, iowa. i'd like to say hi to my wife sherry, my son brodie, and my daughter hanna. happy birthday, everybody. >> another american serviceman far away from his family tonight. you know, just ahead we're going to show you up close some gritty detail what life is like for troops living here. i think you'll be surprised at the conditions they're living under. all this week dr. sanjay gupta has also been here in afghanistan, reporting from trauma centers, air mobile medical units, talking to doctors and medics, showing you how they are saving lives. sanjay's also been closely following the recovery of a 2-year-old afghan boy who suffered a serious brain injury. the child's name is malik, and many of you have been profoundly touched by his strength and determination. so how is malik doing? sanjay gupta traveled to daikunda province to find out.