Lawmakers are moving to slow the Navy's push for a new unmanned, corvette-sized vessel the service highlighted in its fiscal year 2020 budget, a move that follows a year of conversations between lawmakers and Navy officers about the maturity of unmanned systems. The program, Large Unmanned Surface Vehicle , sought $372 million to begin an aggressive acquisition schedule in FY-20 that would procure two prototype vessels and award contracts for concept designs. The service would then buy eight LUSVs at...