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.

Steve Rose, deputy director of the 721st Mission Support Group, left, gives Defense Secretary Chuck Hagel a walking tour of the underground tunnels of Cheyenne Mountain Air Force Station in Colorado Springs, Col., June 28, 2013. Army Gen. Charles H. Jacoby Jr., commander of U.S. Northern Command and North American Aerospace Defense Command, right, accompanied them on the tour.

Steve Rose, deputy director of the 721st Mission Support Group, left, gives Defense Secretary Chuck Hagel a walking tour of the underground tunnels of Cheyenne Mountain Air Force Station in Colorado Springs, Col., June 28, 2013. Army Gen. Charles H. Jacoby Jr., commander of U.S. Northern Command and North American Aerospace Defense Command, right, accompanied them on the tour.

Steve Rose, deputy director of the 721st Mission Support Group, left, gives Defense Secretary Chuck Hagel a walking tour of the underground tunnels of Cheyenne Mountain Air Force Station in Colorado Springs, Col., June 28, 2013. Army Gen. Charles H. Jacoby Jr., commander of U.S. Northern Command and North American Aerospace Defense Command, right, accompanied them on the tour.

Photo Gallery