Counter-Strike: Source hostages uses modified Half-Life 2 leak citizen face maps

[Bruner]

Just thought I'd bring awareness to this cool little fact, since I don't see many people talk about it.
It's kind of interesting. If we had never finally gotten the Sandro face map from the 2016 leaks, it still would've been technically accessible in CS:Source. Of course with different color saturation and resolution, but more or less the same face map.
Just like on the leak facemaps, Art and Vance still have their real eyes visible on the CS:Source textures, unlike in
Half-Life 2. The fourth hostage is straight up beta Dr. Kleiner, Dr. Cohrt.

[Bruner]

Interestingly though, the maps de_train and de_nuke have a model of a dead security guard modeled after Mike, and uses the retail Half-Life 2 face map. I imagine this is because these maps might've been added to CS:Source later after release. I'm not sure though, so take that with a grain of salt.