Homeless Vietnam Veteran So Traumatized By War, Can't Remember Unit, Military Terms

TAMPA, FL - Life can be harsh for those living homeless on the nation's city streets. But for one man, it's even worse -- especially when he deals with the emotional scars of battle.

Polls show that 15 percent of the U.S. homeless population have served in the military. Many suffer from Post-Traumatic Stress Disorder (PTSD).

"It was definitely rough when …