When you get near a target, you can scan him to have his identity revealed, or you can tap in their conversation as well. Chad Mulligan is included in the second batch of targets located on a rooftop nearby the second figure. Keep tracking him using the high-tech device and use zoom-out to locate him when you lose sight of him. This is useful when tracking the car as well. When the car makes it to the garage, use the IR scanner. You can find Chad in the leftside area of the garage. You just need to take the vehicle and avoid the cops then head to the airport where you have to drop off the vehicle.
