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 gloved hand squirts blood onto a paper card.

Blood Sample

A lab technician uses a pipette to put blood on a DNA card at Lackland Air Force Base, Texas, Nov. 8, 2018.

Photo Gallery