Who provides the four superweapon authorizations?

Is one of the four officers authorizing a nova bomb a political officer?

No dedicated political officer is identified; the approvals come from four senior officers such as the captain, executive officer, engineer, or weapons officer.

Four senior officers provide authorization, drawn from the captain, executive officer, chief engineer, weapons officer, and other department heads. No dedicated political officer is identified in the chain. Multiple signatures prevent one person from launching the weapon alone. They still do not tell the officers what circumstances justify use, so authorization procedure cannot replace doctrine.