David J Alexander serves as the Senior Science Advisor for Resilience. He also leads the Enduring Sciences Branch of the Department of Homeland Security Science and Technology’s (DHS S&T) Technology Centers Division focusing on interdisciplinary research across the physical, biological, and life sciences to enhance knowledge, advance state of the art, inform investments and drive actions in national threats, hazards, and risks. Other programs he has spearheaded in DHS S&T include leading the S&T Flood Apex and Hurricane Technology Modernization programs as well as an analysis of Wildland Fire Operational Requirements and Capabilities in support of FEMA, US Fire Administration and other key stakeholders. Before his role in DHS S&T, Alexander served as the first appointed geospatial information officer for DHS and as Enterprise Geographic Information Systems Branch lead within the Federal Emergency Management Agency. Before coming to DHS, Alexander acquired practical experience across the local, state, federal, and private sectors. Alexander currently serves as a co-chair of the National Science and Technology Council’s Subcommittee on Resilience Science and Technology and is a member of the International Scientific Committee of the Eighth International Conference on Floodplain Management. He previously served as a member of the National Geospatial Advisory Council, DHS representative to the Federal Geographic Data Committee, co-champion for the National Spatial Data Infrastructure, chair of the Homeland Infrastructure Foundation Level Data Subcommittee. Alexander holds a Doctor of Philosophy from George Mason University and is also an adjunct faculty member at Delta State University.