Human Sergeant animation

[EverCafe44]

I found a new animation for the Human Sergeant and I don't know if its real.
So while I was watching the u got thλt the Half-Life Version while watching as it showed the Alpha characters at 0:38 it shows the Human Sergeant throwing a punch with his left arm and then a swing with his right arm and even a kick with his left leg. I don't know if this is official but if anyone could help out thanks

[Temp_Acount21]

its real, you can see it on the alpha.

[EverCafe44]

its real, you can see it on the alpha.

Thanks! 

[SkelettNinja8000]

its real, you can see it on the alpha.

Thanks! 

It's in the techdemo