The secretary or the secretary’s designee shall be responsible for the preparation of contingency plans for dealing with disturbances at state penal facilities. The plans shall be developed or revised in cooperation with representatives of state and local agencies at least annually. Contingency plans developed shall encompass contingencies of varying levels of severity, specific contributions of personnel and material from participating agencies, and a unified chain of command. Agencies providing personnel under the plan shall provide commanders for the personnel who will be included in the unified chain of command.