According to the Pentagon's own mental health taskforce, 38% of soldiers, 31% of marines, 49% of National Guard members, and 43% of marine reservists have shown symptoms of post-traumatic stress disorder or other psychological problems within three months of returning from active duty. Estimates from the National Center on PTSD suggest that 40% of OEF/OIF troops may have or will acquire PTSD. The Department of Defense (DoD) reports that 22% of OEF/OIF troops have been flagged for PTSD and referred for follow-up care, and records indicate that over 39,000 OEF/OIF vets had been treated for PTSD as of December, 2006.