SneakHead Software, LLC has Air Assault (iTunes Link) in the iTunes App Store for FREE for a limited time.

The setting is Afghanistan, where the enemy is trying to overtake U.S. Forces. Your mission soldier, is to hold your position and repel the invading Russian / Afghanistan forces with Anti-Air and Mortal fire. Start out in the desert, and work your way into town, fending off several different types of attackers.