
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)
Adm. James A. Lyons was commander of the U.S. Pacific Fleet from 1985 to 1987.
Adm. James A. Lyons was commander of the U.S. Pacific Fleet from 1985 to 1987.