Paul Gradl is a Senior Propulsion Engineer at NASA Marshall Space Flight Center (MSFC). Mr. Gradl serves as Principal Investigator and leads several projects for additive manufacturing (AM) of liquid rocket engine combustion devices and supports a variety of development and flight programs over the last 16 years. He authored and co-authored over 50 conference and professional papers and journal articles; holds four patents in additive; and regularly teaches courses in additive manufacturing. Mr. Gradl is an Associate Fellow of American Institute of Aeronautics and Astronautics (AIAA), serves on several AM industry committees and boards, chairs various sessions at leading conferences on additive manufacturing, and currently authoring a book on additive manufacturing for propulsion.