Sgt. David Francis, a soldier from the 10th Mountain Division stationed at Fort Drum, New York, speaks during an interview on base April 16, 2008. Soldiers of the 10th Mountain Division are among those who've spent most time in Iraq and Afghanistan, making its base at Fort Drum a "canary in a coal mine" for a looming crisis of post-traumatic stress disorder. Picture taken on April 16, 2008. To match feature USA-MILITARY/SOLDIERS REUTERS/Mark Dye (UNITED STATES)