In 1987, Mark Samples was a hero, honored by the Navy for life-saving bravery aboard the U.S.S. Stark after it was hit by Iraqi missiles. Fourteen years later, court papers say, Samples robbed a Minnesota credit union of nearly $70,000, made his getaway on a bicycle, then spent hours huddled in the Mississippi River, feeling suicidal. His attorney blames post-traumatic stress and depression for Samples' downward spiral, but a plea agreement fell apart Friday over whether the judge could show the former Navy hero some leniency. Defense attorney Robert Richman contends that last May's robbery of the Red Wing Credit...