REWARDS - $6,000 and Respect
Call up Pierce and then drive to the airport to being the actual mission. Press the button to jump out of the helicopter, then start falling toward the penthouse suite. Make sure to open up the parachute and land on the penthouse, where you'll need to grab a nearby guard and "coerce" the elevator code out of him.
As soon as you grab him, you'll get the elevator code and the entire place will erupt in gunfire. Feel free to keep the guard you grabbed before as a human shield, or throw him into the pool or off the building. Kill the rest of the enemies in the area, using the opposite side of the pool as cover, then head inside and down the stairs on the right side.
When you get to the bottom, grab the grenades and throw one at the barrels blocking the path. More enemies will be behind here, so kill them all and then call the elevator to have more spawn from where you came. Your boy should now appear from the elevator, so head back upstairs to fight off more enemies.
Once you clear the building, Shaundi will chime in and say the place is rigged to blow, which prompts you to go to the chopper and get in. Take off and follow the helicopter with the lieutenant in it. Note that after a short while, you'll see red blips on your radar, which are men on rooftops firing rocket launchers.
When you reach the point where it lands, either land your own chopper or jump out and deploy the parachute. Either way, a timer will appear on the screen and you'll need to make your way to the lieutenant before it expires, otherwise the penthouse you were in will explode and you will fail. There are plenty of enemies in the way, so try to thin out the herd before grabbing the lieutenant. Do an instant kill to finish the mission.
You'll gain a new HQ for your gang, as well as gang customization.

