Secret Service agents stand guard as Republican presidential candidate, former Massachusetts Gov. Mitt Romney gets into his vehicle upon his arrival in Charlotte, N.C., Wednesday, Aug.

 

              Secret Service agents stand guard as Republican presidential candidate, former Massachusetts Gov. Mitt Romney gets into his vehicle upon his arrival in Charlotte, N.C., Wednesday, Aug.
Secret Service agents stand guard as Republican presidential candidate, former Massachusetts Gov. Mitt Romney gets into his vehicle upon his arrival in Charlotte, N.C., Wednesday, Aug. 15, 2012. (AP Photo/Mary Altaffer)