Air Force One

Travelling White House staff and press board the rear steps of Air Force One on a foggy morning in Seattle...Travelling White House staff and press board the rear steps of Air Force One on a foggy morning in Seattle, November 25, 2013. U.S. President Barack Obama is attending fundraisers and events on the economy and immigration in Los Angeles and San Francisco on Monday.

Jason Reed/Reuters

White House staff and press board the rear steps of Air Force One on a foggy morning in Seattle. US president Barack Obama is attending fundraisers and events on the economy and immigration in Los Angeles and San Francisco on Monday. 

Barack Obama, Air Force One...Air Force personnel stand at attention as Air Force One, with President Barack Obama aboard, prepares to taxi down the runway at Andrews Air Force Base, Md., Tuesday, Aug. 6, 2013. Obama is traveling to Arizona and California. (AP Photo/Susan Walsh)

Susan Walsh/AP

Air Force personnel stand to attention as an Air Force One, with US President Barack Obama on board, prepares to taxi down the runway at Andrews Air Force Base, Maryland on Tuesday. Mr Obama is travelling to Arizona and California. 

US President Barack Obama boards Air For...US President Barack Obama boards Air Force One at Andrews Air Force Base July 25, 2013 in Maryland. Obama is traveling to Florida to speak about the economy. AFP PHOTO/Brendan SMIALOWSKIBRENDAN SMIALOWSKI/AFP/Getty Images

Brendan Smialowski/AFP

US President Barack Obama boards Air Force One at Andrews Air Force Base on Thursday in Maryland. Obama is traveling to Florida to speak about the economy.

A member of the Secret Service is reflected in the side of Air Force One at McGuire Air Force Base, N..J. Tuesday, May 28, 2013. President Barack Obama and New .Jersey Gov. Chris Christie left for an appearance at Asbury Park, one of the many Jersey shore communities devastated by Super Storm Sandy. (AP Photo/Rich Schultz)

Rich Schultz/AP

A member of the secret service is reflected on the side of Air Force One at McGuire Air Force Base in New Jersey on Tuesday. President Barack Obama and Chris Christie, New Jersey governor, left for an appearance at Asbury Park, one of the many Jersey shore communities devastated by super storm Sandy