Poking Fun at Tenderfoot Beauprez

I was looking at the front page of Bob Beauprez' official website.
When I moused over the photo I saw that the 'alt text' read "Congressman Beauprez in Iraq".
(Right click it if you are using Firefox.)

Now, I am no expert on uniforms, but is it possible that Flight Suit Beauprez is once again trying to pull a fast one on us? The two marines are dressed in desert gear, but what is that other soldier wearing? Is he Airforce or Navy? Maybe with his years of military service defferments, Bob can help identify the uniforms for us.