It's an online multiplayer game that came out back in 2007. There are 4 different type of vehicles; jeep, tank, hawk, and jetpacks (if you purchase the downloadable content). If you wish to look at some footage you can checkout my youtube channel or just youtube warhawk.
This is my latest montage and it consists mainly of no-scopes and kills with the hawk (plane). (you need an account to see links)