Stating the amphibious force is critical to the fleet, acting Chief of Naval Operations Adm. Lisa Franchetti told lawmakers Thursday she is committed to the 31-ship legal mandate. “We have a validated need,” Franchetti told the Senate Armed Services Committee at her confirmation hearing Thursday to fill the Navy’s top uniformed position. “I will continue to work with the commandant and secretary to meet the requirement of 31 amphibs,” Franchetti said, in response to a question from committee member Dan...