Arma 3
Warrior Forge Training Base
 This topic has been pinned, so it's probably important
[TLS] Commander A9  [developer] 8 Mar, 2021 @ 7:21am
Sources
The following are links to source materials used for assets in this scenario:

Audio:
Half-Life: Opposing Force
Call of Duty 4: Modern Warfare

Headquarters Sign:
https://www.pri.org/stories/2014-12-12/army-getting-serious-about-cyberwarfare
https://home.army.mil/gordon/index.php/my-fort