Outgoing Secretary of Defense Chuck Hagel, speaking to NPR's Morning Edition, says he's concerned about retaining qualified U.S. military service members amid the "stress and strain" of more than 13 years of continuous warfare in Afghanistan and Iraq.
In one of his last interviews in the job he's held since February 2013, Hagel refers to the "hidden consequences" of "nonstop war" faced by American combat forces since the invasion of Afghanistan in 2001.