California Penal Code Section 12303.2

Every person who recklessly or maliciously has in his possession any destructive device or any explosive on a public street or highway, in or near any theater, hall, school, college, church, hotel, other public building, or private habitation, in, on, or near any aircraft, railway passenger train, car, cable road or cable car, vessel engaged in carrying passengers for hire, or other public place ordinarily passed by human beings is guilty of a felony, and shall be punishable by imprisonment in the state prison for a period of two, four, or six years.