
Caption
The P4 laboratory, on the campus of the Wuhan Institute of Virology, in Wuhan, in China's central Hubei province. (Hector Retamal/AFP via Getty Images)
Michael Dunn, a former president and CEO of the Air Force Association, is a retired Air Force lieutenant general.
Michael Dunn, a former president and CEO of the Air Force Association, is a retired Air Force lieutenant general.