Washington (CNN) - Gen. Martin Dempsey, chairman of the Joint Chiefs of Staff, has been known to break out in song in recent years.
But he got perhaps his biggest audience yet Thursday when he belted out the national anthem with members of the Army Chorus prior to the Washington Nationals Major League Baseball game in the nation's capital.
Dempsey's Sinatra-like voice has been heard all over town. While one of his favorites is "New York, New York," he made headlines in October for signing "When Irish Eyes Are Smiling" at the National Press Club and got the crowd on their feet a few months earlier when performing for a Coast Guard event in Washington, D.C.
Also last year, at an event promoting Sesame Street's new campaign to engage children with parents in the military, the chairman concluded a panel discussion with a rendition of the show's beloved theme song.
He's not afraid to tout his vocals, either. His own Facebook page includes video of him singing at a St. Patrick's Day celebration in 2010.
"Over that time I was also privileged to speak to the Soldiers of the fighting 69th," he writes in the caption with the video. "They are a proud unit with a wonderful history extending from the civil war through Afghanistan. This was my rendition of the song 'The fighting 69th'."
(Thursday's "Star-Spangled Banner" video found its way onto his Facebook page, as well.)