This is the 4th mission from S.A. Noire storyline

After the bank robbery, a powerful politician name Brando attend a radio interview at a radio station in Fort Carson. But there is a rumour that some assassins want him dead. John, Luis, and an unknown sheriff head to the radio station, watch the radio station, and the assassins show up. They wipe out the assassins outside the station, but some assassins managed to enter the station. The trio enter the station just to find out Brando is held as hostage...

A gunfight + a car chase, I hope you enjoy this kind of action