These component parts are not yet actually tasks, because the commander does not plan to assign them at this time to any one for execution. However, the components are visualized as clearly, and are formulated as definitely, as is possible at this point. The requirement is that they be acts that available forces can perform. The method of breaking down an operation into component parts is one of analysis and deduction. Having visualized the manner whereby the operation can contribute to the accomplishment of the effort, the commander has now to determine the means to be employed to this end. Experience and knowledge tell him what numbers and types of ships, aircraft, and other weapons, if properly employed, will attain the effect desired. Each component part will indicate both the action and the physical objectives of the action. For each component, the commander estimates what forces are required. He knows the extent of the armed forces available, and he can, if his total force is adequate, adjust matters to allow each component a force capable of carrying it out. For example, a component operation might call for a search by destroyers, but the commander might find that his destroyers were in such poor relative position as to prevent them from reaching the point of origin in time. Therefore he would be unable to conduct the search by using destroyers alone. He might now consider a search by aircraft. A study of this proposal might indicate that it could be carried out in part by aircraft, but that available aircraft were inadequate to carry it out in its entirety. In such event, consideration would be in order of the possibility of conducting this search by use of other forces also, e.g., submarines and cruisers. In case the commander believes an indicated operation to be infeasible, he first restudies that operation to see whether he can modify it, without adversely affecting the accomplishment of the effort. He may even find that he can eliminate it by including its essential features in some other operation. If the commander finds that his forces are inadequate for the accomplishment of an effort in one stage, but that they are adequate for its accomplishment in successive stages, he may draw a conclusion as to which of the operations he can carry out first. On this basis, he may proceed with the formulation of tasks to include these operations, leaving the remainder to a future time (see page 56).