[ gunfire ] dad first hear dad first heard about the shooting shortly after air force 2 lifted off from force wort. w. he took process. he got -- air force 2. he thought first about the president as his friend. then he turned to his responsibility. he scribbled a reminder to avoid panic. he wrote the word, uncertainty, which he knew the country would be feeling. he knew how important it would be to project stability and help calm the nerves. >> i can reassure this nation and a watching world that the american government is functioning fully and effectively. >> and we continue at the george bush presidential library. as you can see behind me that is a big piece of the berlin wall.