Admiral Timothy Ziemer was appointed by President Trump to be the Senior Director for Global Health Security and Biodefense at the National Security Council, serving from April 2017 to July 2018. Admiral Ziemer was nominated by President G.W. Bush in 2006 to lead the U.S. President’s Malaria Initiative (PMI), a role he held until 2017. Ziemer completed a 30-year career in the U.S. Navy and was Executive Director of World Relief.