A Navy officer overseeing the service's newest unmanned surface vessels said Wednesday those vehicles will begin transits nearing a month in length this fiscal year. "In FY-21, we are pushing the duration of transits increasingly longer and will soon be working up to a 30-day transit," Rear Adm. Casey Moton, program executive officer for unmanned and small combatants, said during a virtual Navy League event yesterday. The service plans to have four USV prototype vessels by the end of the...