washington u.s. president donald trump say unite state need submarine want buy low cost resume push get defense contractors cut price charge pentagon lack submarine go build new submarine price high cut price way trump say interview fox news broadcast late thursday two u.s.-based company general dynamics corp electric boat division huntington ingalls industries newport news shipbuilding build navy nuclear-powered submarine neither general dynamics huntington ingalls immediately respond request comment work hard drive cost see fruit labor senior u.s. navy official say response trump comment advance submarine world buy bring price official say trump take office friday vow build military say become dangerously deplete since win november election pressure u.s. defense contractors reduce cost products sell pentagon december trump receive pledge chief executive lockheed martin cut cost f-35 fighter jet trump complain tweet plane price tag say would ask boeing offer cheap alternative trump say want cut navy submarine price fox news interview