Sweet Johnson

Sweet teaches CJ how gang wars work and points him at his first three Ballas turfs. CJ provokes a takeover, holds the territory through three escalating waves, and flips it Grove.
Doberman is a mission in given to protagonist Carl Johnson by Grove Street Families leader Sean "Sweet" Johnson from the Ammu-Nation store in Market, Los Santos, San Andreas.
The mission serves as a tutorial for gang warfare and the assets income.
Carl receives a phone call from Sweet who tells him to go to Ammu-Nation in Market to purchase firearms and kill a former Grove Street Families gang member who betrayed them and defected to the Ballas. The snitch is hiding in Glen Park. Carl purchases some weapons and heads to Glen Park. He then takes over Glen Park by surviving three waves of attacks from the Ballas. Carl then finds the snitch, emerging from his house, who claims that C.R.A.S.H. officer Frank Tenpenny set him up. Carl kills him and Glen Park now belongs to the Families.