Dr. Doorn is the Program Manager for Water Resources in the Applied Science Program of the Earth Science Division of NASA. With over 25 years of experience in applying remote sensing data to earth application issues, Dr. Doorn now manages over 50 applied projects. He also serves as the Applied Sciences Project Scientist on three missions; SMAP, LDCM, and GRACE-II; the Applied Project Scientist for two Earth Venture-1 projects; Global Agriculture Monitoring task lead at NASA; member of various sub-groups of the National Science and Technology Council of the Executive Office of the President’s Office of Science and Technology Policy; among other duties. Previously, Dr. Doorn was the Division Director of the International Production Assessment Division in the Office of Global Analysis, Foreign Agricultural Service (FAS), USDA. As Director he also managed the USDA Remote Sensing Program which was responsible for the USDA global agriculture monitoring and the USDA Satellite Imagery Archive (SIA). While at USDA for 12 years, Dr. Doorn worked extensively with universities, NASA, USGS, NOAA, USAID, DOD, and other government agencies to improve operational access to existing satellite information. Dr. Doorn served on active duty for nearly 10 years as a U.S. Army Corps of Engineers Topographic Officer, including Company Commander of the 175th Topographic Company in direct support of the XVIII Airborne Corps and Fort Bragg NC facilities. Dr. Doorn separated from active duty in 1994 and remained in the Individual Ready Research (IRR) for over 15 years. At the rank of Major, he entered the Retired Reserve in 2010. Dr Doorn spent five years in private industry as a manager and specialist in remote sensing, GIS, and mapping for numerous engineering and environmental projects. He is a long time member and officer (including President) of the American Society for Photogrammetry and Remote Sensing (ASPRS). Other professional duties have included serving as a representative on USDA's Remote Sensing Coordinating Committee, an appointed member of the National Satellite Land Remote Sensing Archive Advisory Committee (Department of Interior), and a member of the Future of Land Imaging Interagency Working Group (Office of the White House). Dr. Doorn received his doctorate and master’s degrees from The Ohio State University in Geodetic Science and Surveying and his bachelor’s degree in Geological Engineering from South Dakota School of Mines and Technology.