U.S. war veterans at a glance

• Story Highlights
• Number of jobless vets who served after 9/11 nearly doubles in the past year
  
• More than 6 percent of vets have incomes that fall below the federal poverty line
  
• About 131,000 veterans are homeless, according to '08 study
  
• 40 percent of vet disabilities are musculoskeletal, including knee injuries, arthritis