Army Brig. Gen. Michael J. Talley, commander of the Army Medical Research and Development Command and Fort Detrick, Army Col. Wendy Sammons-Jackson, director of the Army Medical Research and Development Command’s Military Infectious Disease Research program, Dr. Nelson Michael, director of the Center for Infectious Disease Research at the Walter Reed Army Institute of Research, and Dr. Kayvon Modjarrad, director of Emerging Infectious Diseases at the Walter Reed Army Institute of Research, discuss vaccine development against the coronavirus during a press briefing at the Pentagon, March 5, 2020.