In mid-September, while President Obama was fending off complaints that he should have done more, done less, or done something different about the overlapping crises in Iraq and Syria, he traveled to Central Command headquarters, at MacDill Air Force Base in Florida. There he addressed some of the men and women who would implement whatever the U.S. military strategy turned out to be.

The part of the speech intended to get coverage was Obama's rationale for reengaging the United States in Iraq, more than a decade after it first invaded and following the long and painful effort to extricate itself. This was big enough news that many cable channels covered the speech live. I watched it on an overhead TV while I sat waiting for a flight at Chicago's O'Hare airport. When Obama got to the section of his speech announcing whether he planned to commit U.S. troops in Iraq (at the time, he didn't), I noticed that many people in the terminal shifted their attention briefly to the TV. As soon as that was over, they went back to their smartphones and their laptops and their Cinnabons as the president droned on.

Usually I would have stopped watching too, since so many aspects of public figures' appearances before the troops have become so formulaic and routine. But I decided to see the whole show.