What does the advanced development and sustainment phase involve?

The advanced development and sustainment phase is primarily focused on maintaining proficiency in tasks that have already been mastered while simultaneously developing skills in new tasks. This phase is crucial for ensuring that individuals and teams not only retain their existing capabilities but also adapt to evolving operational requirements by learning additional tasks. Sustaining mastered tasks supports individual confidence and readiness, while learning new tasks fosters growth and operational flexibility.

In contrast, creating entirely new training programs would fall outside the scope of merely sustaining or advancing existing skills, as it implies starting from scratch rather than building upon what is already established. Eliminating outdated training materials, while relevant to training effectiveness, does not directly align with the core objectives of the advanced development and sustainment phase. Lastly, focusing solely on group tasks ignores the individual skill development that is equally important in this phase, which emphasizes both collective and individual training needs.