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.

People walk on a submarine.

German U-boat

U.S. sailors secure the German U-boat U-505 off the coast of Africa, June 4, 1944. The U-boat was subsequently brought to the United States for intelligence gathering.

Photo Gallery