Today is Inauguration Day in Washington. Donald J. Trump will be sworn in as the 45th President of the United States. The ceremony will largely follow tradition, although there will be some unique changes. Among them, the president-elect has chosen his childhood Bible for the swearing-in ceremony. He will also use the Lincoln Bible, which has been used at three previous inaugural ceremonies: that of Abraham Lincoln in 1861, and for Barack Obama both in 2009 and 2013. ABC News will provide extensive coverage of the Inauguration ceremonies.