Lance Corporal Erik Galvan (right) was 19 when he deployed to Afghanistan in 2011.
Three months into his deployment, he was walking ahead of his squad looking for improvised explosive devices when they approached an ominous wooded area.
His squad leader, Sgt. Daniel Wheeler (left), was several feet behind him when he ordered Galvan to proceed.
They sat down for a StoryCorps conversation about the day that war tore their friendship apart.
Originally aired March 7, 2015, on NPR’s Weekend Edition.