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.

Jet flies through high above Earth

Falcon Flight

The Defense Advanced Research Products Agency’s Falcon Hypersonic Test Vehicle emerges from its rocket nose cone and prepares to re-enter the Earth’s atmosphere.

Photo Gallery