6-13. A successful defense requires the integration and synchronization of all available assets. The defending commander assigns missions, allocates forces (including the reserve), and apportions functional and multifunctional support and sustainment resources within the construct of decisive, shaping, and sustaining operations in an operational framework of deep, close, support, and consolidation areas (if applicable). The commander determines where to concentrate defensive efforts and where to take risks based on the results of the intelligence preparation of the battlefield (IPB) process. Commanders strive to defeat enemy attacks across each relevant domain. Commanders can rapidly redirect manned or unmanned attack reconnaissance aviation and artillery systems initially allocated to shaping operations to support the decisive operation at the appropriate time. Commanders organize forces differently for contiguous and noncontiguous areas of operations.