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.

Man on the Moon

Astronaut Neil Armstrong, the first man to walk on the moon, July 20, 1969: "That's one small step for a man, one giant leap for mankind."

The Department of Defense provides the military forces needed to deter war and ensure our nation's security.

Photos