MANITOWOC, Wis. (AP) - Authorities have arrested two students suspected of bringing a loaded gun and ammunition to a school in Manitowoc. Police say the resource officer at Wilson Junior High School received tips from students that a gun was in school Tuesday. School officials found .22-caliber ammunition inside a student's backpack. Officers also found a loaded revolver inside a second student's backpack. The students told authorities they brought the gun to school for protection against another group.