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 Staff Sgt. Mark Mercer swings to a high wall at the Fit to Win obstacle course during the Army Training and Doctrine Command Drill Sergeant of the Year competition on Fort Jackson, S.C., Sept. 9, 2015. Mercer is a Reserve drill sergeant assigned to the 98th Training Division. U.S. Army photo by Sgt. 1st Class Brian Hamilton

Rope Swing

Army Staff Sgt. Mark Mercer swings to a high wall at the Fit to Win obstacle course during the Army Training and Doctrine Command Drill Sergeant of the Year competition on Fort Jackson, S.C., Sept. 9, 2015. Mercer is a Reserve drill sergeant assigned to the 98th Training Division. U.S. Army photo by Sgt. 1st Class Brian Hamilton

Photo Gallery