JP 3-0, page 150

Chapter V V-44 JP 3-0 include significant theater opening logistic forces, that best facilitates the CONOPS. In these situations, logistic forces may be a higher priority for early deployment than combat forces, as determined by the in-theater protection requirements. (2) Commanders should brief deploying forces on the threat and force protection requirements prior to deployment and upon arrival in the operational area. Also, JFCs and their subordinate commanders evaluate the timing, location, and other factors of force deployment in each COA for the impact of sabotage, criminal activity, and terrorist acts and their impact on joint reception, staging, onward movement, and integration (JRSOI) and the follow-on CONOPS. The threat could involve those not directly supporting or sympathetic to the adversary, but those seeking to take advantage of the situation. (3) During force projection, US forces and ports of debarkation must be protected. JFCs should introduce forces in a manner that provides security for rapid force buildup. Therefore, early entry forces should deploy with sufficient organic and supporting capabilities to preserve their freedom of action and protect personnel and equipment from potential or likely threats. Early entry forces also should include a deployable joint C2 capability to rapidly assess the situation, make decisions, and conduct initial operations. (4) JRSOI occurs in the operational area and comprises the essential processes required to transition arriving personnel, equipment, and materiel into forces capable of meeting operational requirements. Forces are vulnerable during JRSOI, so planning must include force protection requirements. For further information on JRSOI, refer to JP 3-35, Deployment and Redeployment Operations. c. Unit Integrity During Deployment (1) US Service forces normally train as units, and are best able to accomplish a mission when deployed intact. By deploying as an existing unit, forces are able to continue to operate under established procedures, adapting them to the mission and situation, as required. When personnel and elements are drawn from various commands, effectiveness may be decreased. By deploying without established operating procedures, an ad hoc force takes more time to form and adjust to requirements of the mission. This not only complicates mission accomplishment, but also may have an impact on force protection. (2) Even if political restraints on an operation dictate that a large force cannot be deployed intact, commanders should select elements for deployment that have established internal procedures and structures, have trained and operated together, and possess appropriate joint force combat capabilities. In order to provide a JFC with needed versatility, it may not be possible to preserve complete unit integrity. In such cases, units must be prepared to send elements that are able to operate independently of parent units. Attachment to a related unit is the usual mode. In this instance, units not