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.

A man stands beside a museum exhibit.

Dive Talk

Don Walsh speaks about his time as the pilot of the Trieste, one of only two manned submarines ever to explore the Challenger Deep in the Marianas Trench, the deepest part of the world’s oceans, during the Bathyscaphe Trieste Alumni Association biannual reunion at the Naval Undersea Museum-Keyport, Wash., Sept. 15, 2017.

  • Download: Full Size (1.52 MB)
  • Credit: Navy Petty Officer 2nd Class Vaughan Dill VIRIN: 170915-N-SH284-077C.JPG
Photo Gallery