Do the persons of the Christian Trinity possess individual freewills or share a unified volition?

Within Christian theology, particularly in the doctrine of the Trinity, are the three persons—Father, Son, and Holy Spirit—understood to possess distinct and independent faculties of freewill, or are their volitional acts considered to be unified, expressing a single divine will? Or is perhaps one a reflection of the other? Additionally, do various Christian denominations or theological traditions differ in how they address this question?