About 18 months ago, there was a minor scandal when the Pentagon eschewed the already tested and ready for deployment Israeli Trophy active protection system in favor of the Raytheon APS system.
Given what was happening in Iraq, it was concluded that someone was to close to US contractors, and too distant from troop needs.
The Naval Surface Warfare Center, Dahlgren Division, has declared the system Technology Readiness Level 9, which means that it is ready for immediate deployment, and ordered a set.