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.

U.S. Air Force Staff Sgt. Stephen Leonardi, a crew chief with the Air Force's air demonstration team, the Thunderbirds, checks for loose screws on the wing of an F-16 Fighting Falcon aircraft during post-flight maintenance at Royal Air Force Waddington, England, on June 30, 2011. The Thunderbirds are on a six-week European tour during which they are scheduled to perform in nine countries.

Staff Sgt. Stephen Leonardi checks for loose screws on the wing of an F-16 Fighting Falcon aircraft.

U.S. Air Force Staff Sgt. Stephen Leonardi, a crew chief with the Air Force's air demonstration team, the Thunderbirds, checks for loose screws on the wing of an F-16 Fighting Falcon aircraft during post-flight maintenance at Royal Air Force Waddington, England, on June 30, 2011. The Thunderbirds are on a six-week European tour during which they are scheduled to perform in nine countries.

Photo Gallery