Seismic Hazard and Extreme Motions -- Data Needs for Improved Seismic Hazard Analysis -- Capturing and Limiting Groundmotion Uncertainty in Seismic Hazard Assessment -- Long-Period Ground Motions from Digital Acceleration Recordings: A New Era in Engineering Seismology -- Observed Ground Motions, Extreme Ground Motions, and Physical Limits to Ground Motions -- Engineering Uses of Strong Motion …