stress disorder and depression in individuals exposed to this trauma. >> doctor, if you would, i would like to show the viewers -- i think we have the audio from gary tuchman's piece as he describes an shows for us one family's way of coping. >> reporter: this is what many families along japan's pacific coast are coming home to. the ichikawa family lives two blocks from the ocean where a wall of water devoured their neighborhood. with the help of friends they try to clean up, but the task they have in front of them appears to be overwhelming. you can see this family's house is off its foundation. how high did the water go? here is the waterline all the way up there, at least ten feet of waut thaer came down this street. you can see the mud -- it's an insurmountable amount of mud to shovel just to clean up this driveway. they don't know if they'll be able to move back into this