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 diver swimming underwater inserts a screw into ice in a frozen lake.

Icy Insert

A diver inserts an ice screw during an emergency procedures drill as part of an ice diving exercise in Sheridan Lake, British Columbia, March 14, 2023. The exercise is designed to enhance interoperability between U.S. and Canadian diving units.

Photo Gallery