San Francisco Giants' Brandon Crawford, center, is greeted by teammates Brandon Belt, left, and Hunter Pence after hitting a grand slam against the Pittsburgh Pirates in the fourth inning of Wednesday night's game. Don Wright/AP hide caption

itoggle caption Don Wright/AP

Traffic moves past Texas Health Presbyterian Hospital in Dallas, where a patient showed up with symptoms that were later confirmed to be Ebola. Mike Stone/Getty Images hide caption

itoggle caption Mike Stone/Getty Images

President Obama boards Air Force One after attending a Democratic fundraiser in Newport, R.I. in August. Ahead of this fall's midterm elections, he's not doing big public rallies for Democratic candidates, instead opting for private events. Charles Krupa/AP hide caption

itoggle caption Charles Krupa/AP