Cal. Mil. & Vet. Code § 147

In case of insurrection, invasion, war, rebellion, tumult, riot, breach of the peace, public calamity or catastrophe, or imminent danger thereof, or in the event of emergency in which all or any part of the militia is actively engaged in service upon order of the Governor, the Governor may suspend any and all provisions of this division or other laws of the State which require advertisement for bids for purchases of supplies or employment of services.