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.

Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, makes a joke at the retirement ceremony of Army Gen. Keith Alexander, who is stepping down as head of U.S. Cyber Command and the National Security Agency, at the agency's headquarters on Fort George Meade, Md., March 28, 2014.

DEMPSEY COMMENT

Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, makes a joke at the retirement ceremony of Army Gen. Keith Alexander, who is stepping down as head of U.S. Cyber Command and the National Security Agency, at the agency's headquarters on Fort George Meade, Md., March 28, 2014.

Photo Gallery