The Truth

The Truth flies CJ over a freight train carrying military samples. CJ jetpacks down to the train, lifts a green-goo container, and flies it back to the Mothership van.
Green Goo is a mission in given to protagonist Carl Johnson by pot-growing hippie The Truth from the Verdant Meadows Airfield in Bone County, San Andreas.
Carl is in the airstrip, sitting on a crate, looking and waiting for The Truth. Suddenly, The Truth comes out of nowhere, riding the Jetpack Carl retrieved from Area 69 back then, and nearly collides with Carl. The Truth falls off and asks Carl to fly the Jetpack, saying he's too old for the thing. He wants Carl to head for a heavily guarded train and get the "stuff" from there. Carl asks what stuff The Truth wants him to steal, but The Truth states that he does not know yet, causing a confused Carl to angrily ask him why. The Truth merely replies by saying that Carl will know the answer by getting "whatever they least want us to get."
Carl heads for the train, which is coming from Prickle Pine. He kills the guards protecting the train and shoots at three blue crates, with the third one revealing the stuff The Truth was looking for. He collects the jar of green goo and takes it back to The Truth, who is waiting at the airstrip. Carl gives it to The Truth, who calls the green goo "everything". Carl asks one more time what it means, but The Truth ignores the question and drives off in his van.