On May 26, 2016 the National Security Council and the Office of Science and Technology Policy held a webinar focused on building community preparedness to extreme heat as part of FEMA’s PrepareAthon Extreme Heat Week. The webinar was planned as part of an interagency collaboration (including NOAA, CDC, FEMA, DOD, OSHA, SAMHSA, ASPR, NIH, EPA and others) to address the Grand Challenge of Disaster Reduction for heat waves as part of the Subcommittee on Disaster Reduction of the National Science and Technology Council.