Dr. Marc L. Levitan is the Lead Research Engineer for the National Windstorm Impact Reduction Program at the National Institute of Standards and Technology. He served as lead investigator for the National Construction Safety Team technical investigation of the Joplin tornado and the NIST study of the 2013 Moore tornado. Levitan also leads implementation of many recommendations resulting from these studies, including chairing the SEI committee that developed the tornado load provisions for ASCE 7-22; the ICC committee developing the 2023 and previous editions of the ICC 500 Storm Shelter standard; and the ASCE/SEI/AMS committee developing a new standard on Wind Speed Estimation in Tornadoes.