That's what ARMA 2 looks like when it decides to turn on the underwater filter on the camera just to mess with you. This is a side effect of DEGRADE, Bohemia's appropriately named copyright protection system that makes the games slowly start falling apart when they detect they've been pirated. For instance, in the ARMA series, your guns will become increasingly inaccurate, your vehicles won't obey your orders, and your enemies will start acting like they're going through a collective brain stroke. It's like the game itself is learning to hate you and will do everything possible to get you to leave it alone.
The AI's synchronized dance moves will also get super weird.
But video game pirates are nothing if not persistent, as evidenced by the 200 viruses and Russian dating site ads masquerading as "download" buttons they had to click on before getting to install a game for free. If they insist on playing the pirated version of ARMA 2 after everything else, DEGRADE will eventually turn their soldier into a bird -- not a bird holding an AK-47 or driving a tank, just a regular ol' bird, flying high above the map. This is accompanied by a message that says: "Good birds do not fly away from this game, you have only yourself to blame."
Which is usually the case whenever you get turned into an animal.