Colonel Timothy Greenhaw is a native of Red Wing, Minnesota. He was commissioned as a second lieutenant, Chemical Corps, through the Reserve Officers’ Training Corps at Bowling Green State University in 1992. His operational assignments include the continental United States, Hawaii, Korea, and a combat tour in Iraq. Tim recently completed command of the U.S. Army Environmental Command and an assignment on the Joint Staff as the deputy director for the Joint Requirements Office for CBRN Defense. He is currently assigned to the U.S. Army War College while serving in the chief of staff of the Army’s Senior Executive Fellowship Program at the Brookings Institution. Tim holds a Bachelor of Arts in environment policy and analysis; a Master of Science in Administration, as well as a Master of Science in national resource strategy from the National Defense University.

Lieutenant Colonel Daniel L. Magruder Jr. is a federal executive fellow at the Brookings Institution. Lieutenant Colonel Magruder received his commission from the United States Air Force Academy in 2003. As a special tactics offficer, he has led special operations forces during Operations Enduring Freedom, Iraqi Freedom, Willing Spirit, Freedom’s Sentinel, and Inherent Resolve. During his most recent deployment, he served as commander of Special Operations Command and Control Element – Northwest and Southern Syria. Prior to assuming his current assignment, Lieutenant Colonel Magruder was the lead speechwriter for the chief of staff of the Air Force.

Colonel Rodrick H. McHaty is the Marine Corps federal executive fellow at the Brookings Institution. His operational assignments include deployments to the western Pacific region and four tours in Iraq. He commanded the Marine Corps Detachment at the Presidio of Monterey. Prior to assuming his current assignment, Colonel McHaty was the current operations director at the Marine Corps Capabilities Development Directorate. He holds a Bachelor of Science in aerospace engineering in addition to four master degrees.

Captain Michael Sinclair is currently assigned as a federal executive fellow at the Brookings Institution in Washington, D.C. He recently served as a deputy legal advisor on the National Security Council (NSC) Staff from July 2019 to July 2020, where he was responsible for providing legal counsel and advice to the president, vice president, and national security advisor on issues involving the Western Hemisphere, border and transportation security, resilience, counternarcotics/transnational organized crime, and bio-defense, including the U.S. COVID-19 response. Prior to reporting to the NSC, Sinclair was the Coast Guard’s legislative counsel in Coast Guard Congressional Affairs. He has also served as the executive officer, deputy flag staff judge advocate (SJA), and deputy commandant for mission support (DCMS) field command SJA at the Legal Service Command (LSC) in Norfolk, Virginia. Captain Sinclair’s legal tours include duty as a division chief in both the Claims and Military Justice/Command Advice Divisions at the LSC, staff attorney at Coast Guard Headquarters in the Office of General Law and the Office of Legislation, and as a detail to the Department of Homeland Security, Office of General Counsel, Operations and Enforcement Law Division. Sinclair graduated from the United States Coast Guard Academy in 1998 with a Bachelor of Science in government. He received a master’s in emergency and disaster management from Touro College in 2006; earned a Juris Doctor from Temple University’s Beasley School of Law in 2010; and was awarded a Masters of Law with distinction in national security from Georgetown University in 2017.