the world watched in horror as the terrorist attack on nairobi's westgate mall unfolded.re stuck inside with little communication to the outside. phillip walton was far from kenya when he learned his wife and children were in the building. all he could do was wait and pray. here's kate snow. >>> three hours had passed since phillip walton was awakened by a call telling him his family was trapped inside the westgate mall, pinned down by gunfire. he had been on his computer all morning checking for updates. then suddenly he received a facebook message from a friend with a freeze frame, a video and there in the bottom right-hand corner was an unmistakable sight. his two sons alive and outside the mall. >> it was my two sons standing with my business partner, who is a very big, very noticeable man. >> reporter: paul weaver raced down to the mall area and confirmed the picture was real. the boys were out. >> and just seeing them, i mean, i don't think there was any bigger hugs in the world. but it was joy. but at the same time seeing the anguish in their face. and blez, we jus