Hari Sreenivasan:

And, finally, on this Christmas night, we continue a tradition we started a few years ago, where we ask the U.S. military to recite a holiday poem or tale.

Tonight, musicians from the Air Force, Army, Navy, Marine Corps, and Coast Guard sing and perform "Carol of the Bells."

This video was produced by an agency called the Defense Media Activity, an organization within the Pentagon.

(MUSIC)