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

Photo Gallery

Cleaning a Machine Gun

U.S. Air Force Senior Airman Matthew Meyer cleans and lubricates an M2 .50-caliber machine gun on an HH-60 Pave Hawk helicopter during a preflight check at Bagram Airfield, Afghanistan, Dec. 26, 2015. Meyer is assigned to the 455th Expeditionary Aircraft Maintenance Squadron. U.S. Air Force photo by Tech. Sgt. Robert Cloys

Download Image: Full Size (0.65 MB)