An official website of the United States Government 
Here's how you know

Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( lock ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Photos

Snapshots of what’s happening in the Defense Department.

Retired Army Sgt. 1st Class Sammy L. Davis, a Medal of Honor recipient, plays “Shenandoah” on a harmonica during the invocation for the USO of Metropolitan Washington-Baltimore's 33rd awards dinner in Arlington, Va., March 24, 2015. Davis plays the song as a tribute to his sergeant in Vietnam. The sergeant, who was killed, had asked Davis to learn to play it because it renewed his spirit and gave his heart hope.

Retired Army Sgt. 1st Class Sammy L. Davis, a Medal of Honor recipient, plays “Shenandoah” on a harmonica during the invocation for the USO of Metropolitan Washington-Baltimore's 33rd awards dinner in Arlington, Va., March 24, 2015. Davis plays the song as a tribute to his sergeant in Vietnam. The sergeant, who was killed, had asked Davis to learn to play it because it renewed his spirit and gave his heart hope.

Retired Army Sgt. 1st Class Sammy L. Davis, a Medal of Honor recipient, plays “Shenandoah” on a harmonica during the invocation for the USO of Metropolitan Washington-Baltimore's 33rd awards dinner in Arlington, Va., March 24, 2015. Davis plays the song as a tribute to his sergeant in Vietnam. The sergeant, who was killed, had asked Davis to learn to play it because it renewed his spirit and gave his heart hope.

Photo Gallery