This is a custom mission from the game "Grand Theft Auto 5" and the mission is called "Neutralizer". In the mission, Michael, Trevor and Ron sneak into the military base. They go in the back of a cargo plane without the crew knowing. After the plane takes off, they hijack the plane and land it at Sandy Shores Airfield. After that, they go through the city in a high speed chase with the military, they find cover and deliver their goods to a buyer in a warehouse. After that, they each get paid. 