tokyo japanese court sentence former u.s. military base worker life prison friday rape murder woman southern island okinawa public broadcaster nhk report naha district court find kenneth franklin shinzato 33 guilty kill 20-year-old rina shimabukuro april last year nhk say court spokesman tell reuters unable immediately confirm decision case spark anger island locals long protest presence u.s. military base say impose heavy burden okinawa okinawa host around 50,000 u.s. nationals include 30,000 military personnel civilians employ base bid assuage locals unite state last year agree limit legal protection benefit u.s. civilian contractors work military japan status force agreement sofa date back 1960. sofa exempt personnel require visa japan criticize use u.s. military ship people home japanese police capture incidents involve u.s. personnel stir resentment among okinawans nov. 19 local man kill road accident van collide car drive u.s. marine suspect drive influence alcohol u.s. military respond impose drink ban personnel japan base japan court sentence u.s. base worker life rape murder nhk