Authorities say a biplane pilot injured during a crash at a northwest Missouri airshow has died of his injuries. Saturday during a performance at the Cameron Airshow. The phone number for air show organizer Eric Evans, who also manages the Cameron Memorial Airport, rang unanswered Sunday. The Cameron Police Department announced the death of 50-year-old Steven O'Berg of Smithville in a news release Sunday. O'Berg was injured when his Pitts biplane crashed around 1:50 p.m.