Cal. MVC § 188

In the event of a call to active duty in case of insurrection, invasion, tumult, riot, breach of the peace, public calamity or catastrophe, or other emergency, or imminent danger thereof, the Adjutant General, with the approval of the Governor, may secure all necessary supplies, equipment, meals, quarters, subsistence, transportation, medical, surgical, and hospital services, and dental and artificial devices for the officers and men and women called to active duty. Those purchases and services shall be exempt from the rules and regulations set forth in Chapter 2 (commencing with Section 10290) of Part 2 of Division 2 of the Public Contract Code. Claims for expenses thus incurred, when approved by the Adjutant General as purchases for the emergency, shall be deemed valid claims against appropriations for military purposes.

Except as otherwise provided in this act all claims shall be subject to the laws relating to state procurement of materials, supplies, equipment, and services pursuant to Chapter 2 (commencing with Section 10290) of Part 2 of Division 2 of the Public Contract Code.