You are a part of US Combat operation. Complete the operation by shooting targets down. You got limited time to complete the entire operation, otherwise you fail.
The world oil supply is low and the battle for resources is about to begin. A new oil rich desert has been discovered, and it is your duty to claim it for your country.
Defend your base against incoming enemies from all sides. Your commandos have ability to call special orders, upgrade turrets and towers. Playing 'E'ndless level gets your score on the leaderboard.