JP 3-0, page 55

Joint Functions III-3 supports an efficient decision-making process. Enabled by timely intelligence, surveillance, and reconnaissance (ISR), the goal is to provide the ability to make decisions and execute those decisions more rapidly and effectively than the adversary. This decreases risk and allows the commander more control over the timing and tempo of operations. c. Command Authorities. JFCs exercise command authorities (i.e., combatant command [command authority] {COCOM}, OPCON, tactical control [TACON], and support) delegated to them by law or senior leaders and commanders over assigned and attached forces. Command relationships is another term for these authorities. JP 1, Doctrine for the Armed Forces of the United States, provides details on each authority, and Figure III- 1 summarizes their relationships. Unity of command in joint operations is maintained through the application of the various command relationships as follows. “The key is not to make quick decisions, but to make timely decisions.” General Colin Powell Chairman of the Joint Chiefs of Staff 01 October 1989–30 September 1993 Figure III-1. Command Relationships Synopsis Command Relationships Synopsis      Authoritative direction for all military operations and joint training Organize and employ commands and forces Assign command functions to subordinates Establish plans and requirements for intelligence, surveillance, and reconnaissance activities Suspend subordinate commanders from duty Operational control when delegated Tactical control when delegated Support relationship when assigned     Planning, programming, budgeting, and execution process input Assignment of subordinate commanders Relationships with Department of Defense agencies Directive authority for logistics Combatant Command (Command Authority) (Unique to Combatant Commander) Local direction and control of movements or maneuvers to accomplish mission Aid, assist, protect, or sustain another organization