Tips from people watching a Milwaukee television station helped authorities round up four sex offenders who went missing while they were on parole.  Convicted sex offenders have to stay in contact with the state, letting authorities know where they are living and when they move.  FOX-6 broadcast the photos and the calls started coming in.  Fifty-four-year-old Hosia Jones had been off-the-grid since last summer.  Fifty-six-year-old G-B Gladney was found inside an assisted living facility.  Fifty-five-year-old Cevell Alexander was taken into custody at a west-side street corner and 35-year-old Quentin Morgan was rounded up Thursday night.