The 38th Memorial Ceremony honoring the victims of the 1981 Nanuet Mall Brinks Robbery was held yesterday on Mountainview Avenue near the Thruway entrance in Nyack. The ceremony honored Nyack police Sergeant Edward O’Grady and Officer Waverly “Chipper” Brown, who were killed nearby during a roadblock set up to catch the getaway cars, along with Brinks guard, Peter Paige who was killed at the scene.