"We speak with journalist Neil Shea, who has reported on Afghanistan and Iraq since 2006 for Stars and Stripes and other publications. Shea discusses his experiences witnessing disturbing behavior during his travels with U.S. troops in Afghanistan and offers insight into understanding the massacre of 16 Afghan civilians. "When we cycle our soldiers and marines through these wars that don’t really have a clear purpose over years and years...we expect light-switch control over their aggression," Shea says. "We expect to be able to turn them into killers and then turn them back into winners of hearts and minds. And when you do that to a man or a woman over many years, that light-switch control begins to fray."...."