veins begins to recite those words he heard last on january 20, 1961. >> i do solemnly r swear that i will faithfully execute the office of president of the united states. >> bobby's voice breaks down. it's too much for him. >> here is a picture of the swearing in of the 36th president of the united states lyndon b. johnson. >> president johnson wants jackie to stand next to him for his inauguration. she insists on wearing her bloodstained clothes. >> by putting jacqueline kennedy in that e photo, he's showing the continueuation of power and jfk's widow is standing there. but i think ultimately the image conveyed utter shock and grief.