Nearly 1,800 U.S. military members have been killed in Afghanistan since the war began there 10 years ago — the longest war in U.S. history. A new report examines these deaths, based on information drawn from obituaries and tribute pages for all 1,446 U.S. military casualties since the war began in October 2001 until December 2010. We speak with the lead author of “American Military Deaths in Afghanistan, and the Communities from which These Soldiers, Sailors, Airmen, and Marines Came.” Michael Zweig is a professor of economics and director of the Center for Study of Working Class Life at the State University of New York at Stony Brook. “In the United States, about 62 percent of the population are in the working class,” Zweig says. “But of the casualties, it’s 78 percent who are working-class people.”