NASHVILLE, Tenn. (AP) — Years after thousands of veterans learned they may have been exposed to infections at veterans hospitals, many of those veterans are still mired in legal battles seeking compensation from the Department of Veterans Affairs.In the latest legal setback, a federal appeals court has ruled against a Tennessee veteran who claims he contracted hepatitis B after employees at the Murfreesboro VA hospital negligently failed to properly clean colonoscopy equipment.The court found that Carl Huddleston's claim, filed more than three years after the procedure, came too late, even though he acted within months after he learned his health could have been endangered. The ruling last week could have an impact on similar lawsuits against the VA.