Dust Off is a mission in the third chapter of the game, Grand Theft Auto IV, given by the United Liberty Paper. In this mission your mysterious contact at the paper asks you to tail and eventually hijack a helicopter.

1. Character: United Liberty Paper
2. Reward: $7,000
3. Unlocks: None
4. Achievements: NoneWikiCheats: Grand Theft Auto IV Walkthrough

1. Be sure to use a good car so you can keep up with the helicopter.
2. When you get to the landing site, keep your distance and let the chopper land, so as not to scare off the pilot.
3. Be sure to avoid the runway as it will give you an automatic four-star wanted level.WikiCheats: Grand Theft Auto IV Walkthrough

United Liberty Paper is a front for a shadowy government organization that claims to have no ties to any other government agencies, such as the FBI. The contact at the paper is eventually revealed to be Michelle's superior and offers to help track down the man Niko is looking for in return for Niko's help.Wikipedia: List of Characters in Grand Theft Auto IV

• • Head over to the paper company and meet up with your contact once more. After speaking with him, grab a good car and head to the location he tells you.

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  Once you arrive at the location, he'll call to tell you to follow a helicopter and then hijack it once it lands.

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  When you get to the landing site, let the copter land before making your move.

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  Wait for its marker on your map to turn blue, then move in. You'll see a bunch of bad guys. There are two near the entrance, and several more near the helicopter.

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  Start off with the sniper rifle, then take out the rest with the assault rifle. When they're all dead, hop into the helicopter, press the Right Trigger to lift off, then fly it over to the airport (don't try and board the helicopter if there are enemies around. If you do, they'll kill you while you're sitting in the pilot's chair).

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  Land at the indicator, and you'll be done.

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  Reward: $7,000