If I had to choose the dominant religion of Air Force officers, it would be non-religious. I'm sure many of us believe in the Christian God, but no one brings it up. I can literally count on one hand the number of times I've heard someone talking about Christianity at work. If a Muslim airman were ever discriminated against, it would be because they were religious in general, not because they were a member of the wrong religion.
As far as race goes: same. Nobody gives a shit. The US military is probably one of the world's most diverse organizations without the newest diversity push. Only 10% of Army officers are black? Well, the US population is 13% black. Sounds about right, and nobody treats them any differently.
The most important criteria for how well someone fits in, at least in an Air Force flying squadron, is still 1. How much of a bro you are and 2. Whether or not you're any good in the jet.