The Army will continue a multi-faceted approach to support and maintain its infrastructure. Appropriated funds will be used to construct, purchase, and maintain unique equipment and facilities. Equipment items or facilities which are developed during a specific program are retained and modified, as appropriate, to meet additional R&D needs. The Army will continue to expand simulation and modeling capacities to reduce costs of materiel development, improve safety, and shorten developmental schedules. Simulation and modeling is included in all ATDs in Simulation Support Plans. Finally, the Army leverages the facilities investments of external organizations by sharing or otherwise using those facilities that can contribute to Army objectives.