I've always been a fan of this series and what it represents, but I've always kept my critique to myself on these photos for some reason. This is a great shot, as are the rest in the series that you've done, but as a whole for the entire series I've always had just one nit-pick: the uniforms seem to mostly blend into the background, giving your subjects the look of being floating heads. The light on their faces is always great and really captures them well, I just always find myself wishing that you used light to somehow better distinguish the uniforms from the background. Perhaps a liiiiittle bit of a kicker from behind, or an additional light that's placed at a low angle up at the subject (like a loose clamshell setup), which would act both as a light that illuminates the uniform, and adds some fill light from below. Or you could even perhaps do that with a silver reflector. Another option would be to aim a light at the backdrop, just to illuminate it enough to allow us to see the form of the uniform and to distinguish it from the background.