A landing force needs counterbattery detection and location capability from a shipboard system to fill the gap between landings and the operational capability of its own radars ashore. The AN/SPY-1 radar - on Aegis cruisers such as the Normandy (CG-60) - can be modified to perform this crucial task.
In December 1996, the Marine Corps stated its formal requirements for naval surface fire support (NSFS) in a letter from the Commanding General of Marine Corps Combat Development Command to the Chief of Naval Operations. Since then, some have expressed "surprise" over the requirement for leveraging existing shipboard radars to conduct counterbattery detection and location "From the Sea." This reaction may spring from a failure to grasp the fundamentals of amphibious tactics and operational requirements for making war on land or, perhaps, from some interservice misconceptions.