text: Chapter 4
  collection to plan, organize, and execute shaping operations that answer the CCIRs no matter what element
  of decisive action currently dominates. (See figure 4-9.)
  Figure 4-9. Development of understanding
  Develop and Manage Requirements
  4-154. Developing requirements is the continuous process of identifying, prioritizing, and refining gaps in
  data, relevant information, and knowledge concerning relevant aspects of the operational environment. The
  BCT staff must resolve these gaps in order for the commander to achieve situational understanding. Constant
  collaboration among all staff sections helps in redefining information requirements as the situation develops.
  Requirements are generally captured as information requirements; the two types of information requirements
  are CCIRs and EEFI (see figure 5-5 on page 5-17). Identifying information requirements assists the BCT
  commander and staff in filtering available information by defining what is important to mission
  accomplishment.
  4-155. For requirements management, there are two types of requirements that result from planning
  requirements and assessing collection: priority intelligence requirements that are part of the CCIRs, and
  information requirements. (See figure 4-10.) Priority intelligence requirements and information requirements
  may focus on threat units or on capabilities the threat requires to complete missions and tasks. Each
  requirement is further refined into discrete pieces of information that together answer that requirement. These
  pieces are referred to as indicators and specific information requirements. Use the indicators and to develop
  the information collection plan. (See ATP 2-01 and ATP 2-19.4 foradditional information.)