Article Photos: Romney releases doctor's letter, says he's healthy



Republican presidential candidate and former Massachusetts Gov. Mitt Romney gets in his vehicle as he arrives in Las Vegas, Friday, Sept. 21, 2012. (AP Photo/Charles Dharapak)

Republican presidential candidate and former Massachusetts Gov. Mitt Romney gets in his vehicle as he arrives in Las Vegas, Friday, Sept. 21, 2012. (AP Photo/Charles Dharapak)