In re G.Y.

I. Factual and Procedural Background

In November 1998, after appellant was beaten by a group of men in a park, he went to his friend’s house. He and his friend then took the friend’s father’s handgun and drove to the assailants’ house. Appellant held the gun to a woman’s head and threatened to shoot her unless she summoned the men from inside the house. She did so and two men, who were holding baseball bats, came out of the house. Appellant threatened to shoot one of the men, but he and his friend left. In November 1998, the District Attorney filed a juvenile wardship petition (§ 602, subd. (a)), which alleged that appellant, who was then 17 years old, committed two counts of assault with a handgun and by means of force likely to produce great bodily injury (Pen. Code, § 245, subd. (a)(1) – counts 1 and 3), two counts of making criminal threats (Pen. Code, § 422 – counts 2 and 4), and one count of possession of a concealable firearm (Pen. Code, former § 12101, subd. (a) – count 5). It was also alleged that appellant personally used a firearm in the commission of counts 1 through 4. (Pen. Code, former § 12022.5, subd. (a)(1), § 1203.06.) A month later, appellant admitted the…