Best Practices for Leap Second Event Occurring on 31 December 2016 has been published by the Department of Homeland Security’s National Cybersecurity and Communications Integration Center in coordination with the United States Naval Observatory, National Institute of Standards and Technology, the USCG Navigation Center, and the National Coordination Office for Space-Based Positioning, Navigation and Timing. This product is intended to assist federal, state, local, and private sector organizations with preparations for Saturday, 31 December 2016 Leap Second event. The document can be found on the Navigation Center’s website: http://navcen.uscg.gov/pdf/gps/BestPracticesForLeapSecond12312016.pdf