Crowd of 800,000 to welcome Obama to second half of his presidency

A day after formally beginning his second term, President Barack Obama on Monday takes part in the full trappings of his inauguration by reciting the oath of office in front of a crowd expected to number between 800,000 and 900,000 people.

The nation's first African-American president also will become only the 17th U.S. leader to deliver a second inaugural address before leading the traditional parade up Pennsylvania Avenue to the White House.