Another Guard member was in critical condition. The suspect is an Afghan man who once served in a paramilitary unit that worked with U.S. forces, officials said.
Rahmanullah Lakanwal was among the Afghans who came to the United States after the Taliban takeover of Afghanistan. Earlier, he served in a paramilitary unit that worked with U.S. forces.
The C.I.A. and an Afghan intelligence official said that the shooter had been part of an Afghan “partner force,” known as a Zero Unit, trained and supported by the agency in the southern province of Kandahar.