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. Marine Corps Gunnery Sgt. Marcus S. McCollum provides aerial security with a GAU-21 .50-caliber machine gun inside a CH-53E Super Stallion helicopter over Helmand province, Afghanistan, Aug. 22, 2013. McCollum, a crew chief, is assigned to Marine Heavy Helicopter Squadron 462.

AERIAL SECURITY

U.S. Marine Corps Gunnery Sgt. Marcus S. McCollum provides aerial security with a GAU-21 .50-caliber machine gun inside a CH-53E Super Stallion helicopter over Helmand province, Afghanistan, Aug. 22, 2013. McCollum, a crew chief, is assigned to Marine Heavy Helicopter Squadron 462.

Photo Gallery