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 helicopter is on display in a dirt field with two helicopters on the right.

Pima Air and Space Museum

A Marine Corps CH-46E Sea Knight transport helicopter, left, on display at the Pima Air and Space Museum in Tucson, Ariz. The Sea Knight was the standard, medium-sized cargo helicopter of the Marine Corps and the Navy from 1962 until 2015.

Photo Gallery