BALTIMORE - SEPTEMBER 21:  U.S. Republican presidential nominee Sen. John McCain (R-AZ) pauses while speaking before members of the National Guard Association of the United States during their annual convention September 21, 2008 in Baltimore, Maryland. Both Sen. John McCain (R-AZ) and Democratic vice presidential nominee Sen. Joseph Biden (D-DE) planned to speak to the group during their National Guard Convention. Getty Images logo Getty Images 9 months ago

BALTIMORE - SEPTEMBER 21: U.S. Republican presidential nominee Sen. John McCain (R-AZ) pauses while speaking before members of the National Guard Association of the United States during their annual convention September 21, 2008 in Baltimore, Maryland. Both Sen. John McCain (R-AZ) and Democratic vice presidential nominee Sen. Joseph Biden (D-DE) planned to speak to the group during their National Guard Convention.