I started out interviewing the Commanding General of the 1st Marine Division. He told me that I needed to talk with several colonels. They, in turn, referred me to all the battalion commanders who referred me to their company commanders. Everyone I spoke with I asked, "Whom should I speak with?" Eventually, I worked my way down to the Lance Corporals. I interviewed nearly 200 Soldiers, Sailors, Airmen, Marines, embedded reporters and family members simply by referral.