[crashing] >>> zach brannon didn't fully comprehend how bad it was.he tremendous earthquake and the deadly wall of water that followed it was snubbing out more than 18,000 lives. tens of thousands of homes, whole towns were being swept away, but zach didn't know that yet. >> i just wanted to find georgia, my best friend and i wanted to make sure she was all right. >> zach kept telling himself she was all right. know da, the small town on the coast where georgia lived was protected by massive concrete sea walls and barriers. >> so your first thought wasn't, oh, god, she's in trouble. it was more, thank god there's a wall. >> yes, it's there. there's no possible way it could have gotten over that. >> how did you find out you were wrong? >> well, i decided -- i just left, i left work. >> back in indiana zach's parents, relieved their son was alive got another e-mail. zach was going to look for georgia. >> now a new set of concerns like -- i wasn't even exactly sure where she was. so once we figured that out, we looked it up on the map, well, it wasn't fa