Joint Chiefs Chairman Gen. Martin Dempsey, accompanied by Defense Secretary Chuck Hagel, brief reporters about ongoing operations against Islamic extremists in Syria and Iraq during a news conference at the Pentagon, Friday, Sept. 26, 2014. (AP Photo/J. Scott Applewhite)
Joint Chiefs Chairman Gen. Martin Dempsey, accompanied by Defense Secretary Chuck Hagel, brief reporters about ongoing operations against Islamic extremists in Syria and Iraq during a news conference at the Pentagon, Friday, Sept. 26, 2014. (AP Photo/J. Scott Applewhite) AP
Joint Chiefs Chairman Gen. Martin Dempsey, accompanied by Defense Secretary Chuck Hagel, brief reporters about ongoing operations against Islamic extremists in Syria and Iraq during a news conference at the Pentagon, Friday, Sept. 26, 2014. (AP Photo/J. Scott Applewhite) AP