- "I need another favor. Some documents are about to change hands that would be very useful for me. Security system plans - seems we both have eyes on the same prize. The exchange has been set up at a construction site on top of a skyscraper in Downtown so you'll need a helicopter. Bring the briefcase to the warehouse. Make this happen and I won't forget it."
- — Description
There is a security system plans exchange taking place at the top of Mile High Club in construction in Downtown Los Santos (the same where the mission The Construction Assassination takes place). Lester is interested in the plans. It is advised to the team to land at the top of the Maze Bank Tower building to have a perfect angle for sniping the plans' protection men. Once all the men on the roof are dead, the team enters the helicopter again and lands it on the building where the briefcase is. Few men will be in the lower floor protecting it. When one of the players collected the briefcase, he needs to deliver it to Lester's warehouse in Murrieta Heights.
- Steal the briefcase.
- Deliver the briefcase to Lester's warehouse.