The Department of Veterans Affairs keeps "limited" research on how its care helps veterans with service-connected conditions recover, a government watchdog said in a report released in January. Rep. Jack Bergman, R-Michigan, a retired Marine Corps lieutenant general, asked the Government Accountability Office to study whether VA care and benefits are helping veterans with service-connected disabilities get better. The subsequent GAO report found the results difficult to determine because the data wasn't easily available to compare and the majority of reevaluations of veterans' disability statuses did not change. Read more on Military.com.