This Half Life foto contains
pferdewrangler, wrangler, and pferd wrangler.
There might also be
reitweg, pferdepfad, lippizan, lipizzaner, lippizaner, reitpferd, reiten, montieren, sattelpferd, and berg.
Youtuber user bloodrunsclear: "A long time request, based on the video game of the same name. I finally managed a perfect live action Gordon Freeman: Charlie Sheen from The Arrival."