There are no existing units below division level that are capable of unilaterally conducting effective air assault operations. Pure units simply do not have adequate organic assets to ensure successful air assault mission accomplishment. Task-organizing or mission-specific tailoring of forces is the norm for air assault operations, however, the battalion is the lowest level that has sufficient personnel to plan, coordinate, and control an air assault operation. When company size operations are conducted, the bulk of the planning takes place at battalion or higher headquarters.