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.

Two Marines in hazmat suits rinse someone during a simulated training.

Scrubbed and Scoured

Marines perform decontamination procedures on a simulated casualty during a training exercise at the Guardian Centers, Perry, Ga., March 21, 2025. The training prepared Marines to respond to chemical, biological, radiological and nuclear threats through realistic scenarios focused on reconnaissance, decontamination and casualty rescue.

Photo Gallery