JERSEY CITY — Jersey City Police Chief Mike Kelly remembered Joseph Seals as one of the "cop stars," who like other police officers who died before him in the line of duty "gave the ultimate sacrifice," and whose pictures are kept on the wall of his office. "No matter what angle that you stand in my office, you see cop stars and it motivates me every day, every single day. And Joe Seals was no different," Kelly said. Police and other officials marked the anniversary of last year's mass shooting that killed four people, including Jersey City police Detective Joseph Seals with a ceremony Thursday near the cemetery where Seals was killed.