Romney Protection 01

U.S. Secret Service agents and local law enforcement guard the campaign buses of Republican presidential candidate and former Massachusetts Governor Mitt Romney and vice presidential candidate Rep. Paul Ryan (R-WI) on the tarmac at Dulles International Airport on August 11, 2012 in Sterling, Virginia. Mitt Romney kicked off a four day bus tour with an announcement of his running mate, Rep. Paul Ryan (R-WI). Getty

Republican presidential candidate and former Massachusetts Governor Mitt Romney (L) and Rep. Paul Ryan (R-WI) (R) greet supporters during a campaign rally on August 11, 2012 in Manassas, Virginia. Mitt Romney kicked off a four day bus tour with an announcement of his running mate, Rep. Paul Ryan (R-WI). Getty

Republican presidential candidate and former Massachusetts Governor Mitt Romney (L) and his running mate Rep. Paul Ryan (R-WI) wave to an overflow crowd before a campaign rally at Absolute Style furniture on August 12, 2012 in High Point, North Carolina. Mitt Romney continues his four day bus tour a day after announcing his running mate, Rep. Paul Ryan (R-WI). Getty

Republican U.S. presidential candidate Mitt Romney greets supporters during a campaign stop at Absolute Style furniture store in High Point, North Carolina August 12, 2012. Reuters

Republican presidential candidate and former Massachusetts Governor Mitt Romney greets an overflow crowd before a campaign rally at Absolute Style furniture on August 12, 2012 in High Point, North Carolina. Mitt Romney continues his four day bus tour a day after announcing his running mate, Rep. Paul Ryan (R-WI). Getty

Republican vice presidential candidate Rep. Paul Ryan (R-WI) greets an overflow crowd before a campaign rally at Absolute Style furniture on August 12, 2012 in High Point, North Carolina. Mitt Romney continues his four day bus tour a day after announcing his running mate, Rep. Paul Ryan (R-WI). Getty

US Republican presidential candidate and former Massachusetts Governor Mitt Romney greets supporters prior to speaking during a campaign rally at Absolute Style furniture company in High Point, North Carolina, August 12, 2012. Romney and his running mate Wisconsin Representative Paul Ryan continue on the second day of a 4-day bus trip that will take Romney to 4 key swing states, Virginia, North Carolina, Florida and Ohio, and also to Ryan's home state of Wisconsin. Getty

Republican presidential candidate and former Massachusetts Governor Mitt Romney (R) looks on as his running mate Republican vice presidential candidate, U.S. Rep. Paul Ryan (R-WI) speaks to an overflow crowd outside of a campaign rally at the NASCAR Technical Institute on August 12, 2012 in Mooresville, North Carolina. Mitt Romney continues his four day bus tour a day after announcing his running mate, Rep. Paul Ryan (R-WI). Getty

Republican vice presidential candidate, U.S. Rep. Paul Ryan (R-WI) shakes hands with supporters after speaking with Republican presidential candidate and former Massachusetts Governor Mitt Romney during the Mooresville Victory Rally August 12, 2012 at NASCAR Technical Institute in Mooresville, North Carolina. Mitt Romney will make stops in Florida and Ohio during his four-day bus tour. Getty

Republican presidential candidate and former Massachusetts Gov. Mitt Romney shakes hands with supporters after speaking at the Mooresville Victory Rally with his running mate Republican vice presidential candidate, U.S. Rep. Paul Ryan (R-WI) August 12, 2012 at NASCAR Technical Institute in Mooresville, North Carolina. Mitt Romney will make stops in Florida and Ohio during his four-day bus tour. Getty

Republican presidential candidate Mitt Romney, center, greets supporters at a rally Sunday, Aug. 12, 2012, in Mooresville, N.C. , at the NASCAR Technical Institute. AP

Republican presidential candidate, former Massachusetts Gov. Mitt Romney, and vice presidential running mate Rep. Paul Ryan, R-Wis. , left, greet supporters during a campaign event at the NASCAR Technical Institute, Sunday, Aug. 12, 2012, in Mooresville, N.C. AP

In this photo provided by the U.S. Coast Guard, Republican Presidential candidate Mitt Romney, second from right, shakes a person's hand during a campaign rally in Manassas, Va. , Saturday, Aug. 11, 2012. Romney announced Wisconsin Congressman Paul Ryan, second from left, as his running mate during an event in Norfolk, Va. , launching a bus tour promoting The Romney Plan For A Stronger Middle Class in Virginia. AP

Members of the U.S. Secret Service are seen on the rooftop of a building near the site of a campaign rally for Republican presidential candidate, former Massachusetts Gov. Mitt Romney, in Manassas, Va. , Saturday, Aug. 11, 2012. AP

Wisconsin Representative Paul Ryan greets supporters after US Republican presidential candidate and former Massachusetts Governor Mitt Romney announced Ryan as his vice presidential running mate during a campaign rally at the Nauticus Museum after touring the USS Wisconsin in Norfolk, Virginia, August 11, 2012. Romney and his new running mate embark on the first day of a 4-day bus trip that will take the White House hopefuls to 4 key swing states, Virginia, North Carolina, Florida and Ohio. Getty

Republican presidential candidate, former Massachusetts Gov. Mitt Romney (R) and U.S. Rep. Paul Ryan (R-WI) wave as Ryan is announced as his vice presidential running mate aboard the USS Wisconsin August 11, 2012 in Norfolk, Virginia. Ryan, a seven term congressman, is Chairman of the House Budget Committee and provides a strong contrast to the Obama administration on fiscal policy. Getty

US Republican presidential candidate and former Massachusetts Governor Mitt Romney and Wisconsin Representative Paul Ryan(2ndL) greet supporters after announcing Ryan as his vice presidential running mate during a campaign rally at the Nauticus Museum after touring the USS Wisconsin in Norfolk, Virginia, August 11, 2012. Romney and his new running mate embark on the first day of a 4-day bus trip that will take the White House hopefuls to 4 key swing states, Virginia, North Carolina, Florida and Ohio. Getty

Republican presidential candidate, former Massachusetts Gov. Mitt Romney (C) arrives at the USS Wisconsin August 11, 2012 in Norfolk, Virginia. Mitt Romney will announce Rep. Paul Ryan (R-WI), a seven term congressman, as his Vice President pick. Ryan is Chairman of the House Budget Committee and provides a strong contrast to the Obama administration on fiscal policy. Getty

Janna Ryan, wife of newly announced Republican vice presidential candidate, Wisconsin Rep. Paul Ryan, partially visible behind her, greets crowd members after her husband addressed the crowd Saturday, Aug. 11, 2012 in Norfolk, Va. AP

U.S. Secret Service agents guard the campaign bus of Republican presidential candidate and former Massachusetts Gov. Mitt Romney on August 10, 2012 in Norfolk, Virginia. Romney is kicking off a four-day bus tour that in addtion to Viriginia, will see the candidate visit Florida, North Carolina and Ohio. Getty

The motorcade of Republican presidential candidate and former Massachusetts Gov. Mitt Romney drives towards Downtown Boston on August 10, 2012 in Belmont, Massachusetts. Mitt Romney visited his campaign headquarters a day before kicking off a four day bus tour that will visit Virginia, Florida, North Carolina and Ohio. Getty

A U.S. Secret Service agent guards a door before Republican presidential candidate and former Massachusetts Gov. Mitt Romney arrived at his campaign headquarters on August 10, 2012 in Boston, Massachusetts. Mitt Romney visited his campaign headquarters a day before kicking off a four day bus tour that will visit Virginia, Florida, North Carolina and Ohio. Getty

Republican presidential candidate and former Massachusetts Gov. Mitt Romney departs an Upper East Side event in Manhattan on August 9, 2012 in New York City. Mitt Romney is visiting New York for fundraising events today before travelling to Boston. Getty

A secret service agent stands posted at a field as Republican presidential candidate and former Massachusetts Governor Mitt Romney meets with Iowa Secretary of Agriculture Bill Northey at a farm in Des Moines, Iowa August 8, 2012. Reuters

Republican presidential candidate and former Massachusetts Governor Mitt Romney (back C) shakes hands with supporters during a campaign event at Central Campus High School in Des Moines, Iowa August 8, 2012. Reuters

Republican presidential candidate and former Massachusetts Gov. Mitt Romney campaigns at Stepto's BBQ Shack in Evansville, Ind. , Saturday, Aug. 4, 2012. AP

Republican presidential candidate and former Massachusetts Gov. Mitt Romney greets supporters during a campaign event with Republican Governors at Basalt Public High School on August 2, 2012 in Basalt, Colorado. One day after returning from a six-day overseas trip to England, Israel and Poland, Mitt Romney is campaigning in Colorado before heading to Nevada. Getty

Republican presidential candidate and former Massachusetts Gov. Mitt Romney steps off of a picnic table after speaking to an overflow crowd during a campaign event at the Jefferson County Fairgrounds on August 2, 2012 in Golden, Colorado. One day after returning from a six-day overseas trip to England, Israel and Poland, Mitt Romney is campaigning in Colorado before heading to Nevada. Getty

U.S. Republican Presidential candidate Mitt Romney takes off his jacket as he walks to his limousine after visiting the Warsaw Uprising Memorial in Warsaw, July 31, 2012. Reuters

U.S. Republican presidential candidate, former Massachusetts Gov. Mitt Romney (C) talks with participants after his speech in the Hall of the University of Warsaw Library on July 31, 2012 in Warsaw, Poland. After visiting London, Israel, and the polish city of Gdansk, Romney visits the capital of Poland, Warsaw. Getty

U.S. Republican presidential candidate Mitt Romney (C) is surrounded by security as he walks in the center of Gdansk Old Town, July 30, 2012. Reuters

Republican presidential candidate and former Massachusetts Gov. Mitt Romney and his wife Ann board their charter plane in Tel Aviv, Israel as they travel to Poland, Monday, July 30, 2012. AP

U.S. Republican Presidential candidate Mitt Romney (C) arrives surrounded by security to deliver foreign policy remarks at Mishkenot Sha'ananim in Jerusalem, July 29, 2012. Reuters

US Republican presidential candidate Mitt Romney greets people after placing a message, written on paper, in the ancient stones of the Western Wall in Jerusalem's Old City on July 29, 2012, during the annual Tisha B’Av (Ninth of Av) fasting and a memorial day, commemorating the destruction of ancient Jerusalem temples. Romney is meeting Israeli leaders as he seeks to burnish his foreign policy credentials and portray himself as a better friend to Israel than President Barack Obama. Getty

Israeli security is seen after the motorcade of Republican presidential candidate and former Massachusetts Gov. Mitt Romney arrives at the King David Hotel in Jerusalem, Sunday, July 29, 2012. AP

U.S. Republican Presidential candidate Mitt Romney is recognized by pedestrians at Grosvenor Place in London, July 27, 2012, as he was forced by gridlock traffic to walk from his hotel to the Irish Embassy to meet with Irish Prime Minister (Taoiseach) Enda Kenny. Reuters

U.S. Republican Presidential candidate Mitt Romney gets out of his SUV with a team of security as he arrives for a fundraising event in London, July 26, 2012. Reuters

Republican presidential candidate, former Massachusetts Gov. Mitt Romney arrives for a private fundraiser in Buffalo N.Y. , on Friday, June 29, 2012. AP

A U.S. Secret Service agent carries his weapon as he looks out from a motorcade vehicle as Republican presidential candidate Mitt Romney, not pictured, arrives for a private campaign finance event in New York, Thursday, June 28, 2012. AP

Secret Service vehicles escort the campaign bus of Republican presidential candidate, former Massachusetts Gov. Mitt Romney after leaving Yampa Valley Airport on May 28, 2012 in Yampa, Colorado. Mitt Romney will campaign in Colorado before heading to Las Vegas, Nevada. Getty