Not Sure...
I've been accused of being the man in the picture, but I never flew F-4Ds...just Es and Gs. A friend sent it to me..and he never said where he got it, or if it was him!!
I think the picture is either Smokey Hill range in Kansas, or a bomb-range in Oklahoma. Hard to tell in the avatar, but the range-control tower is visible at the bottom.
Austin (Bergstrom AFB) had RF-4Cs once upon a time, and the jet in the pic isn't one...doesn't rule out the location, though.