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.

Air Force Master Sgt. Michael Dupertuis, the aircrew flight equipment superintendent for the 6th Operations Support Squadron at MacDill Air Force Base, Fla., is part of a select group of athletes driven to compete in the sport of ultramarathon running. He has completed two ultramarathons and many shorter long-distance races. Air Force photo by Alannah Don

Ultramarathoner

Air Force Master Sgt. Michael Dupertuis, the aircrew flight equipment superintendent for the 6th Operations Support Squadron at MacDill Air Force Base, Fla., is part of a select group of athletes driven to compete in the sport of ultramarathon running. He has completed two ultramarathons and many shorter long-distance races. Air Force photo by Alannah Don

Photo Gallery