Screenshot above is not from the co-op mode.
If you own Spec Ops: The Line or are still considering it, you'll be interested to know some free multiplayer co-op DLC has just been released free of charge for it on all platforms.
The co-op is two players, and in it both of you will complete various objectives across four "fast paced" missions, each featuring different environments and characters. Among the obstacles: enemy waves and sandstorms.
It's not clear if there's support for online and offline co-op, and whether or not split screen is supported, but feel free to let me know either way.