sentences:  In 1992 the CNO ordered a 21st-century Destroyer (DD-21) Technology Study.This led to a new program called Surface Combatant for the 21st century (SC-21), intended as a family of ships with a range of capabilities that would not necessarily fit old designations of "destroyers" and "cruisers".Meanwhile, strategy papers such as "FORWARD...FROM THE SEA" were redefining the Navy's priorities towards littoral warfare and the support of amphibious assaults inland.