Park Record Media Center

The 57th Presidential Inaugural Parade rolls down Pennsylvania Avenue from Capitol Hill in Washington, Monday, Jan. 21, 2013, after President Barack Obama's ceremonial swearing-in ceremony during the 57th Presidential Inauguration. (AP Photo/Alex Brandon)

US President Barack Obama and wife Michelle Obama walk with daughters Sasha and Malia to the Reviewing Stand on Pennsylvania Avenue to watch the Parade during the 57th Presidential Inauguration on January 21, 2013 in Washington, DC. ROD LAMKEY/AFP/Getty Images

US Army Military District of Washington Major General Michael L. Linnington, Commander JFHQ National Capitol Region (C) is flanked by US President Barack Obama and First Lady Michelle Obama (L side) and Vice President Joe Biden and his wife Jill Biden as they review troops and Congressional leaders (top steps) also attend during inauguration ceremonies at the US Capitol, Washington DC, January 21, 2013. REUTERS/Mike Theiler

President Barack Obama and first lady Michelle Obama ride in the presidential limousine during the 57th Presidential Inauguration parade down Pennsylvania Avenue Monday, Jan. 21, 2013, in Washington. (AP Photo/Charles Dharapak)

A Secret Service vehicle escorts President Barack Obama and First Lady Michelle Obama's motorcade during the inauguration parade on January 21, 2013 in Washington, DC. President Obama was ceremonially sworn in for a second term office during a public ceremony at the U.S. Capitol building. (Photo by John Moore/Getty Images)

U.S. Secret Service agents ride on stepbar on the outside of their vehicle as they follow President Barack Obama as he leaves Capitol Hill in Washington, Monday, Jan. 21, 2013, following his ceremonial swearing-in ceremony during the 57th Presidential Inauguration. (AP Photo/Cliff Owen)

The presidential limousine with President Barack Obama and first lady Michelle Obama inside, heads down Pennsylvania Avenue in the Inaugural Parade after the ceremonial swearing-in for the 57th Presidential Inauguration on Capitol Hill in Washington, Monday, Jan. 21, 2013. (AP Photo/Susan Walsh)

First lady Michelle Obama is driven past crowds during the inauguration parade on January 21, 2013 in Washington, DC. President Barack Obama was ceremonially sworn in for a second term of office during a public ceremony at the U.S. Capitol building. (Photo by John Moore/Getty Images)

President Barack Obama gets out of the limousine to walk down Pennsylvania Avenue en route to the White House, Monday, Jan. 21, 2013, in Washington. Thousands marched during the 57th Presidential Inauguration parade after the ceremonial swearing-in of President Barack Obama. (AP Photo/Steve Helber)

President Barack Obama and first lady Michelle Obama walk the inaugural parade route walk down Pennsylvania Avenue en route to the White House, Monday, Jan. 21, 2013, in Washington. Thousands marched during the 57th Presidential Inauguration parade after the ceremonial swearing-in of President Barack Obama. (AP Photo/Gerald Herbert)

U.S. President Barack Obama and first lady Michelle Obama walk down Constitution Avenue after emerging from the presidential limousine during the inaugural parade from the Capitol to the White House in Washington, January 21, 2013. REUTERS/Jason Reed

US President Barack Obama and First Lady Michelle Obama walk along Pennsylvania Avenue during the parade following Obama's second inauguration as the 44th US president on January 21, 2013 in Washington, DC. SAUL LOEB/AFP/Getty Images

A spectator watches U.S. President Barack Obama go by during the inaugural parade in Washington, January 21, 2013. REUTERS/Kevin Lamarque

People wave at U.S. President Barack Obama's passing limousine during the inaugural parade in Washington, January 21, 2013. REUTERS/Jonathan Ernst

A boy watched the Inaugural Parade on January 21, 2013 in Washington, DC. BRENDAN SMIALOWSKI/AFP/Getty Images

People hold aloft posters of President Barack Obama and first lady Michelle Obama, altered to appear in African dress, during the inauguration parade on January 21, 2013 in Washington, DC. President Obama was ceremonially sworn in for a second term office during a public ceremony at the U.S. Capitol building. (Photo by John Moore/Getty Images)

President Barack Obama and first lady Michelle Obama are driven past crowds during the inauguration parade on January 21, 2013 in Washington, DC. President Obama was ceremonially sworn in for a second term office during a public ceremony at the U.S. Capitol building. (Photo by John Moore/Getty Images)

Spectators watch from behind a window as U.S. President Barack Obama and first lady Michelle Obama travel from the Capitol towards the White House during the inaugural parade in Washington, January 21, 2013. REUTERS/Larry Downing

Spectators watch from rooftops as U.S. President Barack Obama and first lady Michelle Obama ride in the presidential limousine from the Capitol towards the White House during the inaugural parade in Washington, January 21, 2013. REUTERS/Jason Reed

The 57th Presidential Inaugural Parade rolls down Pennsylvania Avenue from Capitol Hill in Washington, Monday,Jan. 21,2013, following President Barack Obama's ceremonial swearing-in ceremony during the 57th Presidential Inauguration. (AP Photo/Alex Brandon)

Police on motorcyles lead as US President Barack Obama and First Lady Michelle Obama walk along Pennsylvania Avenue during the parade following Obama's second inauguration as the 44th US president on January 21, 2013 in Washington, DC. MLADEN ANTONOV/AFP/Getty Images

Vice President Biden walks down Pennsylvania Avenue en route to the White House, Monday, Jan. 21, 2013, in Washington. Thousands marched during the 57th Presidential Inauguration parade after the ceremonial swearing-in of President Barack Obama. (AP Photo/Carolyn Kaster)

The Army's Old Guard Fife and Drum Corps walks down Pennsylvania Avenue en route to the White House, Monday, Jan. 21, 2013, in Washington. Thousands marched during the 57th Presidential Inauguration parade after the ceremonial swearing-in of President Barack Obama. (AP Photo/Charlie Neibergall)

U.S. Marines march in the inaugural parade in Washington, January 21, 2013. REUTERS/Jonathan Ernst

A ceremonial military band marches during the inauguration parade on January 21, 2013 in Washington, DC. President Barack Obama was ceremonially sworn in for a second term office during a public ceremony at the U.S. Capitol building. (Photo by John Moore/Getty Images)

President Barack Obama and first lady Michelle Obama walk the inaugural parade route down Pennsylvania Avenue en route to the White House, Monday, Jan. 21, 2013, in Washington. Thousands marched during the 57th Presidential Inauguration parade after the ceremonial swearing-in of President Barack Obama. (AP Photo/Frank Franklin II)

The US Army ceremonial Fife and Drum Corps marches in front of the White House during the parade following US President Barack Obama's second inauguration as the 44th US president on January 21, 2013 in Washington, DC. YURI GRIPAS/AFP/Getty Images

The Old Guard Fife and Drum Corps marches during the inaugural parade from the U.S. Capitol to the White House in Washington, January 21, 2013. REUTERS/Rick Wilking

President Barack Obama and first lady Michelle Obama cheer as bands march past the presidential box near the White House, Monday, Jan. 21, 2013, in Washington. Thousands marched during the 57th Presidential Inauguration parade after the ceremonial swearing-in of President Barack Obama. (AP Photo/Gerald Herbert)

US President Barack Obama, First Lady Michelle Obama(2ndR) and daughters Sasha(L) and Malia look on during the parade following Obama's second inauguration as the 44th US president on January 21, 2013 in Washington, DC. YURI GRIPAS/AFP/Getty Images

Sasha (L) and Malia (R) Obama look at an iphone during the inaugural parade of their father, President Barack Obama, in Washington, January 21, 2013. REUTERS/Joe Skipper

President Barack Obama and first lady Michelle Obama gesture with their daughters Sasha, left, and Malia, second from left, during the inaugural parade, Monday, Jan. 21, 2013, in Washington. Thousands marched during the 57th Presidential Inauguration parade after the ceremonial swearing-in of President Barack Obama. (AP Photo/Gerald Herbert)

President Barack Obama waves from his limousine during the beginning of his inaugural parade in Washington January 21, 2013. REUTERS/Gary Cameron