shipboard protection system , page-3

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To benefit from various technology development programs such as the Navy's Fleet Force Protection Future Naval Capabilities initiatives, and to meet an aggressive schedule, SPS was fielded via installation of equipment and software sub-sets, or "block" upgrades. This approach facilitated the early delivery of useful technologies at an economical cost and addressed important capability gaps.

*****Future enhanced capabilities will continue to be incorporated as research and development efforts mature and available resources permit.******