Shoot the Cholos as they advance, using the radar to target their position. However, it's much more likely that you'll get killed before Lance, so let him fend for himself while you find a suitable spot. You're now on foot and Cholos are everywhere! Your job is to kill all the enemies while protecting Lance. Keep firing away and eventually Lance will hit a ramp, ending the first part of the mission. After the first jump, nearly all of the cars will appear up ahead so ignore anything going on behind. Rather than firing indiscriminately at the vehicles - which often causes them to explode, damaging your car in the process - aim for the driver or, failing that, the tires to make them lose control. Their heavy gunfire will wreck your vehicle in record time, so you'll need to be accurate with your aim. Lance grabs the wheel while you wield a sub-machinegun against carloads of Cholos. The reunion with your brother is short-lived as those damn Cholos arrive at the airport and start a small-scale war. You'll usually find Lance in his downtown hotel suite, marked with an 'L' symbol.
As his big brother you need to keep him in line, but its difficult when opportunity and opulence lie around every corner. Having ditched Aunt Enid for the bright lights of the big city, Lance is planning to make some real money real fast.