In addition to providing health care to over 5 million vets each year, the Vets Health Admin. funds research on specific health conditions that veterans may experience. One such condition is is post-traumatic stress disorder (PTSD), an anxiety disorder that can occur after a person is exposed to a life-threatening event. Up to 30% of Vietnam vets and up to 20% of Oper. Enduring Freedom vets and Oper. Iraqi Freedom vets have experienced PTSD. In 2001, VA awarded a contract to conduct a follow-up study, the NVVLS. However, in 2003, VA terminated the contract and the study was not completed. This report discusses: (1) the recent progress VA has made in conducting the NVVLS; and (2) the challenges VA faces in its plans to conduct the NVVLS. Illus.